Dismiss Notice



Register Today It's free! This box will disappear once registered!

EEC-IV 2 and 3 digit trouble codes.

Discussion in 'EEC IV' started by BrooklynBay, May 31, 2006.

  • Searches ExplorerForum.com
    1. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars
      Here is a link to a list of 2, and 3 digit trouble codes, and troubleshooting information: HTTP://WWW.Troublecodes.Net/Ford

      This thread has a link with information on pulling codes without a scanner: http://www.explorerforum.com/forums/showthread.php?t=202039. This is the direct link: http://www.fordfuelinjection.com/?p=13.

      Here is a list of EEC-IV codes:
      2 Digit Codes

      11
      System OK
      12

      Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too low) - ISC

      13
      (O)
      ISC did not respond properly (extends to touch throttle then retracts for KOEO) - ISC

      (R)
      Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too high)

      (M)
      ISC sticking, open ITS circuit or TP sticking

      14

      Ignition pickup (PIP) was erratic - Ignition Systems

      E4OD Transmission diesel RPM sensor - Diesel RPM sensor

      15
      (O)
      No Keep Alive Memory power to PCM pin 1 or bad PCM (Memory Test Failure)

      (M)
      KAM (pin 1) was interrupted (was battery disconnected ?)

      16

      1.9L & 2.5L - Throttle stop set too high - IDLE or Idle Set Procedures

      2.3L - RPM's too low - IDLE

      (O)
      Electronic ignition - IDM circuit fault - Ignition Systems

      17

      1.9L & 2.5L - Throttle stop set too low - IDLE

      18
      (R)
      Check base timing & advance function - Timing Tests

      (M)
      Ignition TACH signal erratic - Ignition Systems

      Spark Angle Word (SAW) circuit failure (1.9L SFI)

      19
      (O)
      No Vehicle Power (pins 37 + 57) or bad PCM VPWR Diagnosis

      (R)
      Erratic idle during test (reset throttle & retest) - Idle Set Procedures

      Electronic ignition Cylinder ID sensor/circuit problem - Ignition Systems

      21

      Engine Coolant Temperature (ECT) sensor out of range - ECT

      22

      MAP (vacuum) or BARO signal out of range - MAP

      23

      Throttle sensor out of range or throttle set too high - TPS

      24

      Intake Air Temperature (IAT) or Vane Air Temperature (VAT) sensor out of range - IAT VAT

      25

      Knock sensor not tested (ignore if not pinging) - KS

      26

      Mass Air Flow (MAF) or Vane Air Flow (VAF) out of range - MAF VAF

      Transmission Oil Temperature (TOT) sensor out of range, Transmissions

      27

      Vehicle Speed Sensor problem - VSS

      28

      Vane Air Temperature (VAT) sensor out of range - VAT

      2.3L w/Electronic Ignition - Cyl ID, IDM low or right coil pack failure - Ignition Systems

      29

      Vehicle Speed Sensor problem - VSS

      31
      (O,R,M)
      EVP - EVP signal is/was out of range - EVP

      (O,R,M)
      EVR - EVP signal is/was low - EVR

      (O,R,M)
      PFE - PFE signal is/was low - PFE

      32
      (R)
      EVP - EGR not responding properly during test - EVP

      (O,R,M)
      EVR - EVP signal is/was low - EVR

      (R,M)
      PFE - PFE shows low pressure, EGR not seating or memory, not seating intermittently - PFE

      33
      (O,M)
      ALL - EGR did not open/ respond during test or if memory code, did not open intermittently - EVP EVR PFE

      34
      (R)
      EVP - EGR did not respond properly during test - EVP

      (O,R,M)
      EVR - EVP sensor is/was high - EVR

      (O,R,M)
      PFE - PFE sensor is/was out of range - PFE

      35
      (R)
      EVP - Engine RPM's too low to test EGR system - EVP

      (O,R,M)
      EVR - EVP sensor signal is/was high - EVR

      (O,R,M)
      PFE - PFE sensor signal is/was high - PFE

      38

      Idle Tracking Switch signal was intermittent - ISC

      39

      Transmission Torque Converter clutch not engaging - Transmissions

      41
      (R)
      System lean - Fuel control

      (M)
      System was lean for 15 seconds or more (no HO2S switching) - Fuel control

      42
      (R)
      System rich - Fuel control

      (M)
      System was rich for 15 seconds or more (no HO2S switching) - Fuel control

      43
      (R)
      HO2S sensor not reading (run at 2000 rpm's for 2 minutes and retest - check for HO2S switching)

      (M)
      Was lean at WOT for 3 seconds or more - Fuel control

      44

      AIR system inoperative - Air Injection

      45

      AIR not Diverting (AIRD) - Air Injection

      Electronic Ignition - coil primary circuit failure - Ignition Systems

      46

      AIR Bypass (AIRB) not working - Air Injection

      Electronic Ignition - primary circuit failure coil 2 - Ignition Systems

      47

      Low flow unmetered air (check for small vacuum leaks, injector o'rings, gaskets etc )

      E4OD transmission 4x4 switch/circuit problem - Transmissions

      48

      High flow unmetered air (check for large vacuum leak, inlet hoses etc. )

      Electronic Ignition - coil primary circuit failure - Ignition Systems

      49

      Electronic Ignition - spout signal circuit problem - Ignition Systems

      Transmission 1/2 shift problem - Transmissions

      51

      Engine Coolant Temperature (ECT) sensor signal is/was too high - ECT

      52

      Power Steering Pressure Switch/circuit open - PSP

      (R)
      Did you turn wheel during test ?

      53

      Throttle Position sensor too high - TPS

      54

      Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal high - IAT VAT

      55

      No or low (under 7.5 V) Key Power to PCM pin 5

      56

      Vane Air Flow (VAF) or Mass Air Flow (MAF) sensor high - VAF MAF

      Transmission Oil Temperature sensor too high - Transmissions

      57

      Intermittent in Park/Neutral/ Switch or Neutral Pressure switch circuit - PNP or Transmissions

      58

      Idle Tracking Switch (ITS) signal problem ISC

      Vane Air Temperature (VAT) sensor out of range or open - VAT

      59

      AXOD 4/3 circuit fault - Transmissions

      3.0L SHO - Low speed fuel pump circuit problem - Power / Fuel Pump Circuits

      Transmission 2/3 shift problem - Transmissions

      61

      Engine Coolant Temperature (ECT) sensor is or was too low - ECT

      62

      AXOD (KOEO only) 3/2 circuit short to ground - Transmissions

      AXOD (KOEO AND KOER) 4/3 circuit failure - Transmissions

      E4OD excessive converter clutch slippage - Transmissions

      63

      Throttle Position Sensor (TPS) signal too low TPS

      64

      Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal low or grounded - IAT VAT

      65

      Check intermittent HO2S (signal or ground) - Fuel Control

      (R)
      E4OD truck - cycle OD cancel switch after engine ID is received - Transmissions

      1984 3.8L ONLY - O, M Battery voltage high (check for electrical system overcharging)

      66

      Vane Air Flow (VAF) or Mass Air Flow (MAF) signal low - VAF MAF

      Transmission Oil Temperature (TOT) signal low (possibly grounded) - Transmissions

      67

      Park/Neutral circuit fault - PNP

      Transmission Manual Lever Position (MLP) sensor circuit - Transmissions

      (M)
      Intermittent Park Neutral Position (PNP) sensor fault - PNP

      68

      Idle Tracking Switch (ITS) circuit (possibly grounded) - ISC

      Vane Air Temperature (VAT) sensor out of range or grounded - VAT

      3.8L AXOD -Transmission Temperature Switch (TTS) open - Transmissions

      Electronic Transmission - Transmission Oil Temperature (TOT) sensor was overheated -Transmissions

      69

      AXOD transmission (O) 3/2 switch closed (possible short circuit) - Transmissions

      AXOD (M) 3/2 switch open (poss short to power) - Transmissions

      E4OD 3/4 shift problem - Transmissions

      70
      (M)
      3.8L AXOD - Data link to instrument cluster fault Service any other EEC codes, erase memory and retest If code is still present refer to instrument cluster diagnosis manual

      71
      (M)
      1.9L TBI, 2.3L TBI, 2.5L TBI - ITS signal was grounded when throttle should have been opening ITS-ISC ISC motor problem or Idle Tracking Switch (ITS) signal wire shorted to ground - ISC

      (M)
      1.9L MFI - PCM re-initialized Possible electrical noise, case ground or intermittent VPWR problem - VPWR Diagnosis

      (M)
      3.8L AXOD - Data link to instrument cluster fault - See code 70

      72
      (R)
      No MAP or MAF change in "goose" test - retest, check for frequency or voltage change - MAP MAF

      (M)
      1.9L MFI - VPWR circuit to PCM was intermittent - VPWR Diagnosis

      (M)
      2.3L T/C - PCM re-initialized Possible electrical noise, case ground or intermittent VPWR problem - VPWR Diagnosis

      (M)
      3.8L AXOD - Message center data link circuit fault - See code 70

      73
      (O)
      Rerun test, if 73 is still output replace TPS

      (R)
      No Throttle Position Sensor (TPS) change in "goose" test Must get at least 25% throttle rotation - TPS

      74

      Was brake depressed after engine ID was received ?

      Brake On Off (BOO) signal open or short to ground - BOO

      75

      Brake On Off (BOO) signal shorted to power - BOO

      76

      Vane Air Flow (VAF) did not respond to "goose" test - VAF

      77

      System did not receive "goose" test - see TESTS

      78
      (M)
      VPWR circuit to PCM was intermittent or the PCM is bad VPWR Diagnosis

      79

      A/C is on or pin 10 is shorted to power

      81

      Boost control solenoid - Solenoids

      AIRD solenoid - Solenoids and Air Injection

      3.0L SHO - Inlet Air Solenoid - Solenoids

      82

      2.3L TC - Fan Control wire shorted to ground - A/C and Fan Circuits

      AIRB solenoid - Solenoids and Air Injection

      3.8L SC - Super Charger Bypass Solenoid - Solenoids

      83

      High Electro Drive Fan circuit fault - A/C and Fan Circuits

      EGR Control solenoid - Solenoids

      3.0L SHO - Low Speed Fuel Pump Relay circuit - Power / Fuel Pump Circuits

      84

      EGR Vacuum Regulator - Solenoids

      EGR cutoff solenoid - Solenoids

      EGR Vent solenoid - Solenoids

      85

      2.3L T/C Automatic - 3/4-4/3 Shift solenoid - Transmissions

      CANP solenoid (ALL 1989) - Solenoids

      (M)
      1.9L MFI - System has corrected rich condition - Fuel control

      86

      2.3L or 2.9L Truck - A4LD 3/4 shift solenoid - Transmissions

      (M) 1.9L MFI - System has corrected lean condition - Fuel control

      87
      (O)
      Fuel pump circuit fault (check inertia switch) - Power / Fuel Pump Circuits

      Vehicles with 2 BBL carb - Temperature Compensated Accelerator Pump Solenoid - Solenoids (M) intermittent in fuel pump primary circuit - Power / Fuel Pump Circuits NOTE: On some Escorts with automatic seat belts this code is normal IN MEMORY due to the wiring

      88

      Throttle Kicker Solenoid - Solenoids

      Variable Voltage Choke relay circuit fault - VVC

      Fan Control circuit fault - A/C and Fan Circuits

      A4LD - Converter Clutch Override solenoid - Transmissions

      Electronic Ignition - IDM, DPI or spout circuit fault - Ignition Systems

      89

      A4LD - Converter Clutch Override solenoid - Transmissions

      AXOD Torque Converter Control solenoid circuit - Transmissions

      Exhaust Heat Control (heat riser) solenoid circuit - Solenoids

      91
      (R, M) System running lean - Fuel control

      Transmission SS 1 circuit/solenoid problem - Transmissions

      92
      (R)
      System running rich - Fuel control

      Transmission SS 2 circuit/solenoid problem - Transmissions

      93
      (O,R)
      Throttle linkage binding or bad ISC motor ISC HO2S not reading Fuel control

      Transmission TCC circuit/solenoid problem - Transmissions

      94

      AIR system inoperative - Air Injection

      Transmission TCC circuit/solenoid problem - Transmissions

      95
      (O)
      Fuel pump: open, bad ground or always on - Power / Fuel Pump Circuits

      (R)
      AIR not Diverting (AIRD) - Air Injection

      (M)
      Possible bad fuel pump ground or open between fuel pump and pin 8 at PCM (Fuel Pump Monitor signal) - Power / Fuel Pump Circuits

      96
      (O)
      Fuel pump monitor circuit shows no power - Power / Fuel Pump Circuits

      (R)
      AIR Bypass (AIRB) not working - Air Injection

      (M)
      (Service 87 code first if present) Fuel pump relay or battery power feed was open - Power / Fuel Pump Circuits

      97

      E4OD OD cancel light circuit failure - Transmissions

      98
      (R)
      Did not pass KOEO yet (Get 11 in KOEO first)

      Transmission EPC circuit/solenoid failure - Transmissions

      99
      (R)
      ISC needs to learn (Let idle for 2 minutes, Erase memory and retest)

      Transmission EPC circuit/solenoid failure - Transmissions

      (R) = Engine Running test (M) = Memory code (O)=Key On Engine Off test

      3 Digit codes

      111

      System checks OK

      112
      (O,M)
      Intake Air Temperature (IAT) sensor is/was low or grounded - IAT

      113
      (O,M)
      IAT sensor is/was high or open - IAT

      114
      (O,R)
      IAT sensor out of range - IAT

      116
      (O,R)
      Engine Coolant (ECT) sensor out of range - ECT

      117
      (O,M)
      ECT sensor is/was low or grounded - ECT

      118
      (O,M)
      ECT sensor is/was high or open - ECT

      121
      (O,R,M)
      Throttle Position (TP) sensor out of range - TPS

      122
      (O,M)
      TP low (possibly grounded or open circuit) - TPS

      123
      (O,M)
      TP is/was high or short to power - TPS

      124
      (M)
      TP voltage was higher than expected - Fuel control

      125
      (M)
      TP voltage was lower than expected - Fuel control

      126
      (O,R,M)
      MAP or BARO sensor out of range - ">MAP

      128
      (M)
      MAP vacuum has not been changing - check vacuum lines - ">MAP

      129
      (R)
      No MAP or Mass Air Flow sensor change during "goose" test - MAP MAF

      136
      (R)
      Oxygen sensor not switching/system lean Left or Front HO2S - Fuel control

      137
      (R)
      Oxygen sensor not switching/system rich Left or Front HO2S - Fuel control

      138
      (R)
      Fault in Cold Start Injector circuit - Fuel control

      139
      (M)
      Oxygen sensor not switching Left or Front HO2S - Fuel control

      144
      (M)
      Oxygen sensor not switching Single, Right or Rear HO2S - Fuel control

      157
      (R,M)
      Mass Air Flow signal is/was low or grounded - MAF

      158
      (O,R,M)
      MAF sensor is/was high or short to power - MAF

      159
      (O,R)
      MAF sensor is/was out of range - MAF

      167
      (R)
      No Throttle Position sensor change in "goose" test (must get at least 25% rotation) - TPS

      171
      (M)
      Oxygen sensor not switching - system was at adaptive limits - Single, Right or Rear HO2S - Fuel control

      172
      (R,M)
      Oxygen sensor not switching - system is or was lean - Single, Right or Rear HO2S - Fuel control

      173
      (R,M)
      Oxygen sensor not switching - system is or was rich - Single, Right or Rear HO2S - Fuel control

      174
      (M)
      Oxygen sensor was slow in switching Single, Right or Rear HO2S - Fuel control

      175
      (M)
      Oxygen sensor not switching - system was at adaptive limits - Left or Front HO2S - Fuel control

      176
      (M)
      Oxygen sensor not switching - system is or was lean Left or Front HO2S - Fuel control

      177
      (M)
      Oxygen sensor not switching - system was rich Left or Front HO2S - Fuel control

      178
      (M)
      Oxygen sensor was slow in switching Left or Front HO2S - Fuel control

      179
      (M)
      Fuel system was rich at part throttle Single, Right or Rear HO2S - Fuel control

      181
      (M)
      Fuel system was lean at part throttle Single, Right or Rear HO2S - Fuel control

      182
      (M)
      Fuel system was rich at idle Single, Right or Rear HO2S - Fuel control

      183
      (M)
      Fuel system was lean at idle Single, Right or Rear HO2S - Fuel control

      184
      (M)
      Mass Air (MAF) output higher than expected - Fuel control

      185
      (M)
      Mass Air (MAF) output lower than expected - Fuel control

      186
      (M)
      Injector pulse width longer than expected or Mass Air Flow (MAF) lower than expected - Fuel control

      187

      Injector pulse width shorter than expected or Mass Air Flow (MAF) higher than expected - Fuel control

      188
      (M)
      Fuel system was rich at part throttle - Left or Front HO2S - Fuel control

      189
      (M)
      Fuel system was lean at part throttle - Left or Front HO2S - Fuel control

      191
      (M)
      Fuel system was rich at idle - Left or Front HO2S - Fuel control

      192
      (M)
      Fuel system was lean at idle - Left or Front HO2S - Fuel control

      193

      Failure in Flexible Fuel (FF) sensor circuit - Fuel control

      194
      (M)
      Perform cylinder balance test to check for inoperative injectors

      195
      (M)
      Perform cylinder balance test to check for inoperative injectors

      211
      (M)
      Ignition PIP signal was erratic or missing - Ignition Systems

      212
      (M)
      Ignition TACH signal was erratic (module/wiring) or SPOUT circuit fault - Ignition Systems

      213
      (R)
      Ignition SPOUT or SAW circuit open or shorted - Ignition Systems

      214
      (M)
      Error in Cylinder ID (CID) circuit or signal - Ignition Systems

      215
      (M)
      Primary circuit failure - ignition coil 1 - Ignition Systems

      216
      (M)
      Primary circuit failure - ignition coil 2 - Ignition Systems

      217
      (M)
      Primary circuit failure - ignition coil 3 - Ignition Systems

      218
      (M)
      IDM signal open or high or left coil pack failure - Ignition Systems

      219
      (M)
      SPOUT circuit failure, timing defaulted to 10 degrees - follow code 213 diagnosis

      222
      (M)
      IDM open or high or right coil pack failure - Ignition Systems

      223
      (M)
      Dual Plug (DPI), SPOUT or IDM circuit fault - Ignition Systems

      224
      (M)
      Failure in ignition coil primary circuit - Ignition Systems

      225
      (R)
      Knock sensor not tested (ignore if not pinging) - KS

      226
      (O)
      Ignition Diagnostic Monitor (IDM) signal fault - Ignition Systems

      232
      (M)
      EI primary coil circuit failure - Ignition Systems

      238
      (M)
      EI primary circuit failure - ignition coil 4 - Ignition Systems

      311
      (R)
      AIR system not working - Single, Right or Rear HO2S - Air Injection

      312
      (R)
      AIR not diverting - Air Injection

      313
      (R)
      AIR not bypassing - Air Injection

      314
      (R)
      AIR inoperative, Left or Front HO2S - Air Injection

      326
      (R,M)
      Pressure Feedback EGR shows low pressure EGR not seating or not seating intermittently - PFE

      327
      (O,R,M)
      EGR feedback signal is/was low - EVR or PFE

      328
      (O,R,M)
      EGR Valve Position (EVP) is/was low - EVR

      332
      (R,M)
      EGR did not open/respond during test or if memory code, did not open intermittently - EVR or PFE

      334
      (O,R,M)
      EVP sensor is/was high - EVR

      335
      (O)
      EGR feedback signal is/was out of range - EVR or PFE

      336
      (O,R,M)
      PFE sensor signal is/was was high - ">PFE

      337
      (O,R,M)
      EGR feedback signal is/was was high - EVR

      338
      (M)
      Cooling system did not heat up (check cooling system / thermostat operation)

      339
      (M)
      Cooling system overheated (check cooling system / thermostat operation)

      341
      (O)
      Octane jumper installed (information only code to notify you if it is installed)

      411
      (R)
      Idle speed system not controlling idle properly (generally idle too high) - ISC

      412
      (R)
      Idle speed system not controlling idle properly (generally idle too low) - ISC

      452
      (M)
      Vehicle Speed Sensor (VSS) problem

      511
      (O)
      No power to PCM pin 1 or bad PCM (processor)

      512
      (M)
      Memory power (PCM pin 1) was interrupted - Was battery disconnected ?

      513
      (O)
      Replace processor (PCM) (internal failure)

      519
      (O)
      PSP switch/circuit open - PSP h Pedal Position (CPP) circuit fault - PNP

      528
      (M)
      System shows voltage at pin 10 (is A/C on ?) or pin 30 (PNP, CPP switch) - PNP

      529
      (M)
      Data Communications Link to processor failure Service any EEC codes, erase memory and retest If code is still present refer to instrument cluster diagnosis manual

      533
      (M)
      Data Communications Link to instrument cluster failure - see 529

      536
      (O,R,M)
      Brake On Off open or shorted to ground - BOO

      538
      (R)
      System did not receive "goose" test - TESTS

      539
      (O)
      System shows voltage at PCM pin 10 Is A/C on ?

      542
      (O,M)
      Fuel pump open, bad ground or always on - - Power / Fuel Pump Circuits

      543
      (O)
      Fuel pump monitor circuit shows no power - Power / Fuel Pump Circuits


      (M)
      (Service 556 code first if present) Fuel pump relay or battery power feed was open - Power / Fuel Pump Circuits

      551

      Problem in Intake Manifold Runner Control (IMRC) solenoid/circuit - Solenoids

      552
      (O)
      AIRB solenoid/circuit failure - Solenoids

      553
      (O)
      AIRD solenoid/circuit failure - Solenoids

      554
      (O)
      Fuel Press Regulator Control solenoid/circuit fault - Power / Fuel Pump Circuits

      556
      (O,M)
      Fuel pump relay primary circuit fault - Power / Fuel Pump Circuits

      557
      (O,M)
      Low speed pump relay primary circuit fault - Power / Fuel Pump Circuits

      558
      (O)
      EGR vacuum regulator solenoid/circuit failure - EVR or PFE or Solenoids

      559
      (O)
      A/C relay primary circuit fault - A/C and Fan Circuits

      563
      (O)
      High Fan Control (HFC) circuit failure - A/C and Fan Circuits

      564
      (O)
      Fan Control (FC) circuit failure - A/C and Fan Circuits

      565
      (O)
      Canister Purge 1 solenoid/circuit failure - Solenoids

      566
      (O)
      transmission 3/4 shift solenoid/circuit - Transmissions

      569
      (O)
      Canister Purge 2 solenoid/circuit failure - Solenoids

      578
      (M)
      A/C pressure sensor VREF short to ground - A/C and Fan Circuits

      579
      (M)
      ACP sensor did not change with A/C on - A/C and Fan Circuits

      581
      (M)
      Cooling fan current was excessive - A/C and Fan Circuits

      582
      (O)
      Open cooling fan circuit - A/C and Fan Circuits

      583
      (M)
      Fuel pump current was excessive - Power / Fuel Pump Circuits

      584
      (M)
      Open power ground circuit - Power / Fuel Pump Circuits

      585
      (M)
      A/C clutch current was excessive - A/C and Fan Circuits

      586
      (M)
      Open circuit in A/C clutch - A/C and Fan Circuits

      587
      (O, M)
      Communication problem between PCM and Variable Control Relay Module (VCRM) - Power / Fuel Pump Circuits

      617
      (M)
      Transmission shift failure (1/2 shift) - Transmissions

      618
      (M)
      Transmission shift failure (2/3 shift) - Transmissions

      619
      (M)
      Transmission shift failure (3/4 shift) - Transmissions

      621
      (O)
      Solenoid/circuit failure - shift solenoid 1 - Transmissions

      622
      (O)
      Solenoid/circuit failure - shift solenoid 2 - Transmissions

      624
      (O,M)
      Solenoid/circuit failure -Electronic Pressure Control (EPC) current is high - Transmissions

      625
      (O,M)
      Solenoid/circuit failure - Electronic Pressure Control (EPC) current is low - Transmissions

      626
      (O)
      Transmission Coast Clutch (CCS) Solenoid/circuit fault - Transmissions

      627
      (O)
      Torque Converter Clutch circuit fault - Transmissions

      628
      (M)
      Excessive converter clutch slippage - Transmissions

      629
      (O,M)
      Torque Converter Clutch circuit fault - Transmissions

      631
      (O)
      Overdrive Cancel Light circuit problem - Transmissions

      632
      (R)
      E4OD - Transmission Control Switch (TCS) should be cycled once between engine ID and Goose test

      633
      (O)
      4x4L switch should be in 4x2 or 4x4 high for the test

      634
      (O,M)
      Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault Electronic shift transmission - Manual Lever Position (MLP) sensor out of range in Park-Transmissions

      636
      (O,R)
      Transmission Oil Temperature (TOT) sensor out of range - Transmissions

      637
      (O,M)
      TOT sensor is/was high or open - Transmissions

      638
      (O,M)
      TOT sensor is/was low or grounded - Transmissions

      639
      (R,M)
      Transmission Speed sensor (TSS) circuit fault - Transmissions

      641
      (O)
      Transmission solenoid/circuit failure Shift Solenoid 3 - Transmissions

      643
      (O,M)
      Torque Converter Clutch (TCC) circuit - Transmissions

      645
      (M)
      Transmission 1st gear failure - Transmissions

      646
      (M)
      Transmission 2nd gear failure - Transmissions

      647
      (M)
      Transmission 3rd gear failure - Transmissions

      648
      (M)
      Transmission 4th gear failure - Transmissions

      649
      (M)
      Transmission EPC system failure - Transmissions

      651
      (M)
      Transmission EPC solenoid/circuit fault - Transmissions

      652
      (O)
      Torque Converter Clutch (TCC) circuit fault - Transmissions

      654
      (O)
      Transmission selector not in PARK - Transmissions

      656
      (M)
      Torque Converter Clutch (TCC) slip - Transmissions

      657
      (M)
      Transmission temperature was excessive - Transmissions

      96 & newer vehicles are OBD2 systems
      and REQUIRE A SCANNER, unless otherwise stated.
      Warning: Please check for manufacturer specific codes and
      confirm the trouble code descriptions with an appropriate manual.
      Disclaimer: We cannot guarantee the accuracy of all information.
      Please confirm the information with an appropriate manual.

      This was the more complete list from the second link:
      EEC-IV

      C—Continuous memory code.
      O—Key On, engine Off self test code.
      R—Engine running self test code.

      MIL

      Type

      11
      System Pass
      C/O/R

      12
      RPM Not Within Self Test Upper Limit
      R

      13
      RPM Not Within Self Test Lower Limit
      R

      DC Motor Did Not Move
      C/O/R

      14
      Profile Ignition Pickup Circuit Failure
      C

      Engine RPM Sensor Circuit Fault (Diesel)
      C

      15
      Readout Memory Test Failed
      O

      Keep Alive Memory Test Failed
      C

      16
      Ignition Diagnostic Module (2.9L, 3.0L & 4.0L)
      O

      Idle RPM High With ISC Retracted (2.5L)
      R

      RPM Above Self Test Limit With ISC Off (1986–90 1.9L EFI)
      R

      RPM Too Low To Perform HO2S Test (Others)
      R

      17
      Idle RPM Low With ISC Retracted (1.9L & 2.5L CFI)
      R

      RPM Below Self Test Limit With ISC Off (1986–90 1.9L EFI)
      R

      18
      Spark Out (SPOUT) Circuit Open
      R

      Loss Of Ignition Diagnostic Module Input To PCM/SPOUT Circuit Grounded
      C

      Spark Angle Word (SAW) Circuit Failure (1.9L SFI)
      C/R

      19
      Failure In PCM Internal Voltage
      R

      Erratic RPM During Hard Idle Self Test
      R

      RPM Drop Too Low During ISC Off Test (1.9L EFI)
      R

      Power Processor Check (2.3L HSC EFI)
      O

      Cylinder Identification Sensor Input Failure (3.0L SHO)
      C

      21
      Engine Coolant Temperature (ECT) Sensor Out Of Self Test Range
      O/R

      22
      Manifold Absolute Pressure/Barometric Pressure Sensor Out Of Self Test Range
      C/O/R

      23
      Throttle Position Sensor Out Of Self Test Range
      C/O/R

      Fuel Injector Pump Lever Sensor Input Is Out Of Self Test Range (Diesel)
      O/R

      24
      Intake Air Temperature/Air Charge Temperature Sensor Out Of Self Test Range
      O/R

      25
      Knock Not Sensed During Dynamic Response Test
      R

      26
      Mass Air Flow/Vane Air Flow Sensor Out Of Self Test Range
      O/R

      Transmission Fluid Temperature Sensor Input Out Of Self Test Range (5.0L, 5.8L, 7.3L & 7.5L Truck)
      O/R

      27
      Vehicle Speed Sensor (2.3L Turbo)
      C

      28
      Loss Of Ignition Diagnostic Module RH Side
      C

      Vane Air Temperature Sensor Input Out Of Self Test Range (1.9L EFI)
      O/R

      29
      Insufficient Input From Programmable Speedometer/Odometer Module (From 1993)
      C

      Insufficient Input From Vehicle Speed Sensor (To 1992)
      C

      31
      EGR Valve Position/Pressure Feedback EGR Circuit Below Minimum Voltage
      C/O/R

      32
      EGR Not Controlling (2.3L OHC & 3.8L CFI)
      R

      EGR Valve Not Seated (1.9L CFI, 2.9L & 3.0L SHO)
      C/R

      EGR Valve Position/Pressure Feedback EGR Voltage Below Closed Voltage (Others)
      C/O/R

      33
      EGR Not Closing Properly (2.3L OHC & 3.8L CFI)
      C/R

      Throttle Position Sensor Noisy/Harsh On Line (Diesel)
      C

      EGR Valve Opening Not Detected (Others)
      C/R

      34
      EGR Valve Opening Not Detected (2.3L OHC & 3.8L CFI)
      R

      Defective EGR Pressure Transducer Sensor (1.9L CFI, 2.3L HSC EFI & 3.0L)
      C/O/R

      EGR On/Off Control (2.3L Turbo)
      R

      EGR Valve Position/Pressure Feedback EGR Voltage Above Closed Limit (Others)
      C/O/R

      35
      RPM Too Low To Perform EGR Test (2.3L OHC & 3.8L CFI)
      R

      EGR Valve Position/EGR Pressure Feedback EGR Circuit Above Maximum Voltage (Others)
      C/O/R

      36
      System Indicates Lean At Idle
      R

      37
      System Indicates Rich At Idle
      R

      38
      DC Motor Idle Speed Control/Idle Tracking Throttle Position Sensor Open Circuit (2.3L CFI & 2.5L HSC)
      C

      39
      AXOD Converter Bypass Clutch Not Applying Properly
      C

      41
      System Indicates Lean
      R

      No HO2S Switching Detected
      C

      42
      System Indicates Rich
      R

      No O2S Switching Detected
      C

      43
      HO2S Lean At Wide Open Throttle (1986–90 1.9L MFI)
      C

      Throttle Position Sensor Below Idle Sped (Diesel)
      C

      44
      Secondary Air System Inoperative
      R

      45
      Secondary Air Upstream During Self Test
      R

      Coil 1 Primary Circuit Failure (1990–91 1.9L EFI/SFI, )
      C

      Distributorless Ignition System Coil Pack 3 Circuit Failure (3.0L SHO 3.8L SC)
      C

      46
      Secondary Air Not Bypassed During Self Test
      R

      Coil 2 Primary Circuit Failure (1990–91 1.9L MFI/SFI)
      C

      Distributorless Ignition System Coil Pack 1 Circuit Failure (3.0L SHO 3.8L SC)
      C

      47
      4 X 4 Switch Is Closed
      O

      Measured Air Flow Low At Base Idle
      R

      48
      Loss Of Ignition Diagnostic Monitor LH Side (2.3L)
      C

      Measured Air Flow High At Base Idle (1986–90 1.9L EFI)
      R

      Distributorless Ignition System Coil Pack 2 Circuit Failure (3.0L SHO 3.8L SC)
      C

      49
      Spark Output (SPOUT) Signal Default To 10°. BDTC (3.0L SHO & 3.8L SC)
      C

      1–2 Shift Error (Others)
      C

      51
      Engine Coolant Temperature Circuit Open
      O/C

      52
      Power Steering Pressure Switch Circuit Open
      O

      Power Steering Pressure Switch Circuit Did Not Change States
      R

      53
      Throttle Position Sensor Circuit Above Maximum Voltage
      C/O

      Fuel Injector Pump Lever Sensor Input Is Greater Than Self Test (Diesel)
      C/O

      54
      Intake Air Temperature/Air Charge Temperature Circuit Open
      C/O/R

      55
      Key Power Check
      R

      56
      Transmission Fluid Temperature Circuit Open
      C/O

      Mass Air Flow/Vane Air Flow Sensor Circuit Above Maximum Voltage
      C/O/R

      57
      Transaxle Neutral Position Switch Circuit Failed Open
      C

      58
      Idle Tracking Switch Circuit Open Or Grounded (CFI)
      O/R

      Vane Air Temperature Sensor Input Greater Than Self Test Maximum (EFI)
      C/O

      59
      AXOD Neutral Position Switch Circuit Failed Open (3.0L & 3.8L)
      C

      2–3 Shift Error (Others)
      C

      Low Speed Fuel Pump Circuit Failure, Battery To PCM (3.0L SHO)
      C/O

      AXOD 4/3 Pressure Switch Circuit Failed Closed
      O

      AXOD 4/3 Pressure Switch Circuit Failed Open
      C

      61
      ECT Sensor Circuit Grounded
      C/O/R

      62
      Torque Converter Clutch Error
      C

      AXOD 4/3 Or 3/2 Pressure Switch Circuit Grounded
      O

      63
      Throttle Position Sensor Circuit Below Minimum Voltage
      C/O/R

      Fuel Injection Pump Lever Sensor Input Is Less Than Self Test Min. (Diesel)
      C/O

      64
      Intake Air Temperature/Air Charge Temperature Circuit Grounded
      C/O/R

      65
      Transmission Control Switch/Overdrive Cancel Switch Circuit Did Not Change States
      R

      Fuel Control (2.3L Turbo)
      C

      66
      Mass Air Flow Sensor Circuit Below Minimum Voltage (Except 1.9L MFI & 2.3L Turbo)
      C

      Vane Air Flow Sensor Input Less Than Self Test Minimum (1.9L MFI & 2.3L Turbo)
      O/C

      Transmission Fluid Temperature Circuit Grounded (Others)
      O/C

      67
      Park Neutral Position Switch Circuit Open; A/C On (Manual)
      O

      Manual Lever Position Sensor Out Of Range/A/C On
      O/C

      Clutch Switch Circuit Failure
      C

      A/C Input High (2.5L TBI)
      O/C

      68
      Idle Tracking Switch Closed (1.9L, 2.3L, 2.5L & 3.8L CFI)
      O/R

      Vane Air Temperature Sensor Input Less Than Self Test Minimum (1.9L MFI & 2.3L Turbo)
      O/C

      Transmission Fluid Temperature Transmission Over Temp (Overheated) (Diesel)
      C

      69
      3–4 Shift Error
      C

      AXOD Neutral Position Switch Failed Open (3.0L)
      C

      AXOD 3/2 Pressure Switch Failed Closed (3.8L SFI)
      C/O

      70
      EEC IV Data Transaxle Circuit Failed (3.8L SFI)
      C

      71
      Idle Tracking Switch Closed On Pre-Position (1.9L, 2.3L & 2.5L CFI)
      C

      Software Re-Initalization Detected (1.9L EFI)
      C

      Cluster Center Control Circuit Failed (3.8L SFI)
      C

      72
      Insufficient Manifold Absolute Pressure/Mass Air Flow Change During Dynamic Response Test
      R

      Power Interrupt Software Re-Initalization Detected (1.9L & 2.3L Turbo)
      C

      Message Center Control Assembly Circuit Failed (3.8L SFI)
      C

      73
      Insufficient Throttle Position Change During Dynamic Response Test
      O/R

      74
      Brake On/Off Circuit Open–Not During Self Test
      R/C

      75
      rake On/Off Circuit Closed/ECA Input Open
      R

      76
      Insufficient Vane Air Flow Sensor Output Change During Dynamic Response Test
      R

      77
      Operator Error Dynamic Response Test
      R

      78
      Re-Initalization Check
      R

      79
      A/C On/Defrost On During Self Test
      O

      81
      Secondary Air Diverter Circuit Failure
      O

      Turbo Boost (2.3L Turbo)
      O

      Insufficient IAS Output Voltage Change When Solenoid Is Activated (3.0L SHO)
      O

      82
      Secondary Air Bypass Circuit Failure
      O

      Integrated Relay Control Module (2.3L Turbo)
      O

      Supercharger Bypass Circuit Failure (3.8L SC)
      O

      83
      Integrated Relay Control Module (2.3L Turbo & 2.5L)
      O

      High Electric Drive Fan Circuit Failure (1.9L & 2.5L SFI)
      O

      EVP/EGRC/EGRV (2.3L OHC & 3.8L CFI)
      O

      Low Speed Fuel Pump Relay Circuit Open (3.0L SHO)
      C/O

      Integrated Relay Control Module (3.8L Turbo)
      O

      High Electric Drive Fan Circuit Failure (3.8L SFI & 3.8L SC)
      O

      84
      EGR Valve Position/Pressure Feedback EGR/EGR Control Circuit Failure
      O

      85
      Adaptive Fuel Lean Limit Reached (1.9L EFI)
      C

      Shift Solenoid 3/4–4/3 (2.3L Turbo)
      O

      CANP Circuit Failure (Others)
      O

      86
      Shift Solenoid Circuit Failure (2.9L 3.0L & 4.0L)
      O

      Adaptive Fuel Rich Limit Reached (1.9L EFI)
      C

      87
      Primary Fuel Pump Circuit Failure
      O/C

      Integrated Relay Control Module (2.3L Turbo & 2.5L & 3.8L MFI)
      O

      88
      Loss Of Dual Plug Input Control
      C

      Shift Solenoid 3/4–4/3 (2.3 Turbo)
      O

      Integrated Relay Control Module (2.5 L HSC & 3.8L EFI)
      O

      Electric Drive Fan Circuit Failure (2.5L, 3.0L SHO & 3.8L SFI)
      O

      Throttle Kicker Fault (5.0L)

      89
      Converter Clutch Override Circuit Failure (2.9L, 3.0L & 4.0L)
      O

      Exhaust Heat Control (3.8L CFI)
      O

      91
      Shift Solenoid 1 Circuit Failure
      O

      HO2S Circuit Indicates Lean
      R

      No HO2S Switching Detected
      C

      92
      Shift Solenoid 2 Circuit Failure
      O

      HO2S Circuit Indicates Rich
      R

      93
      Throttle Position Sensor Input Low At Maximum D.C. Motor Extension (1.9L, 2.3L & 2.5L TBI)
      O

      Converter Clutch Solenoid Circuit Failure (Others)
      O

      94
      Torque Converter Clutch Solenoid Circuit Failure
      O

      Secondary Air Injection Inoperative
      R

      95
      Integrated Relay Control Module (2.5L HSC & 3.8L EFI)
      C/O

      Fuel Pump Circuit Open-PCM To Motor Ground (Others)
      C/O

      96
      Integrated Relay Control Module (2.5L HSC & 3.8L EFI)
      C/O

      High Speed Fuel Pump Relay Circuit Open (3.0L SHO)
      C/O

      Fuel Pump Circuit Open-Battery To PCM (Others)
      C/O

      97
      Transmission Control Indicator Lamp Circuit Failure
      O

      98
      Hard Fault Present
      R

      Electronic Pressure Control Driver Open In PCM (Diesel)
      O

      99
      Electronic Pressure Control Circuit Failure
      O/C

      Electronic Engine System Has Not Learned To Control Idle
      R

      111
      System Pass
      C/O/R

      112
      Intake Air Temperature/Air Charge Temperature Sensor Circuit Below Minimum Voltage
      C/O

      113
      Intake Air Temperature/Air Charge Temperature Sensor Circuit Above Maximum Voltage
      C/O

      114
      Intake Air Temperature/Air Charge Temperature Higher Or Lower Than Expected
      O/R

      116
      Engine Coolant Temperature Higher Or Lower Than Expected
      O/R

      117
      ECT Sensor Circuit Below Minimum Voltage
      C/O

      118
      ECT Sensor Circuit Above Maximum Voltage
      C/O

      121
      Closed Throttle Voltage Higher Or Lower Than Expected
      C/O/R

      121
      Indicates Throttle Position Voltage Inconsistent With Mass Air Flow Sensor
      C/O/R

      122
      Throttle Position Sensor Circuit Below Minimum Voltage
      C/O

      123
      Throttle Position Sensor Circuit Above Maximum Voltage
      C/O

      124
      Throttle Position Sensor Voltage Higher Than Expected
      C

      125
      Throttle Position Sensor Voltage Lower Than Expected
      C

      126
      Manifold Absolute Pressure/Barometric Pressure Sensor Higher Or Lower Than Expected
      C/O/R

      Cylinder Identification Circuit Failure (3.0L SHO)
      C

      128
      Manifold Absolute Pressure Sensor Vacuum Hose Damaged/Disconnected
      C

      129
      Insufficient Manifold Absolute Pressure/Mass Air Flow Change During Dynamic Response Test KOER
      R

      136
      System Indicates Lean (Bank No. 1)
      R

      137
      System Indicates Rich (Bank No. 2)
      R

      138
      Cold Start Injector Flow Insufficient
      R

      139
      No HO2S Switch Detected
      C

      141
      Flexible Fuel Control
      R

      144
      No HO2S Switch Detected
      C

      157
      Mass Air Flows Sensor Circuit Below Minimum Voltage
      C

      158
      Mass Air Flow Sensor Circuit Above Maximum Voltage
      C/O

      159
      Mass Air Flow Higher Or Lower Than Expected
      O/R

      167
      Insufficient Throttle Position Change During Dynamic Response Test
      R

      171
      Fuel System At Adaptive Limits
      C

      No HO2S Switching Detected
      C

      172
      HO2S System Indicates Lean
      C/R

      173
      HO2S System Indicates Rich
      R

      174
      HO2S Switching Time Is Slow
      C

      175
      Fuel System At Adaptive Limits (Bank No. 2)
      C

      176
      System Indicates Lean (Bank No. 2)
      C

      Insufficient TP Change During Dynamic Response Test (4.9L)
      R

      177
      System Indicates Rich (Bank No. 2)
      C

      178
      HO2S Switch Time Is Slow (Bank No. 1)
      C

      179
      Fuel System At Lean Adaptive Limit At Part Throttle, System Rich (1.9L, 2.0L. 2.3L HSC, 2.5L & 3.0L)
      C

      Fuel System Adaptive Lean Limit Is Reached (4.6L, 4.9L 5.0L, 5.8L, 7.0L & 7.5L)
      C

      Fuel System At Rich Adaptive Limit (Others)
      C

      181
      Fuel System At Rich Adaptive Limit At Part Throttle, System Lean (1.9L, 2.0L, 2.3L HSC, 2.5L & 3.0L)
      C

      Fuel System Adaptive Rich Limit Is Reached (4.6L, 4.9L, 5.0L, 5.8L , 7.0L & 7.5L)
      C

      Fuel System At Lean Adaptive Limit (Others)
      C

      182
      Fuel System At Lean Adaptive Limit At Idle, System Rich (1.9L, 2.3L, 2.5L, 3.0L, 3.8L SC, 4.6L , 7.0L & 7.5L)
      C

      Fuel System At Lean Adaptive Limit (Others)
      C

      183
      Fuel System At Rich Adaptive Limit At Idle, System Lean (1.9L, 2.3L, 3.0L, 3.8L SC, 4.6L, 7.0L & 7.5L)
      C

      Fuel System At Rich Adaptive Limit (Others)
      C

      184
      Mass Air Flow Sensor Circuit Voltage Higher Than Expected
      C

      185
      Mass Air Flow Sensor Circuit Voltage Lower Than Expected
      C

      186
      Injector Pulse Width Higher Than Expected (With BARO Sensor)
      C

      Injector Pulse Width Higher Or Mass Air Flow Lower Than Expected (Less BARO Sensor)
      C

      187
      Injector Pulse Width Lower Than Expected (With BARO Sensor)
      C

      Injector Pulse Width Lower Or MAF Higher Than Expected (Less BARO Sensor)
      C

      188
      Fuel System At Lean Adaptive Limit
      C

      189
      Fuel System At Rich Adaptive Limit
      C

      191
      Fuel System At Lean Adaptive Limit (Front)
      C

      192
      Fuel System At Rich Adaptive Limit (Front)

      193
      Flexible Fuel Sensor Circuit Failure
      O

      211
      Profile Ignition Pickup Circuit Failure
      C

      212
      Loss Of Ignition Diagnostic Module Input To PCM/SPOUT Circuit Grounded
      C

      213
      Spark Output (SPOUT) Circuit Open
      R

      214
      Cylinder Identification Circuit Failure
      C

      215
      PCM Detected Coil 1 Primary Circuit Failure (EI)
      C

      216
      PCM Detected Coil 2 Primary Circuit Failure (EI)
      C

      217
      PCM Detected Coil 3 Primary Circuit Failure (EI)
      C

      218
      Loss Of Ignition Diagnostic Module Signal LH Side (Dual Plug EI)
      C

      219
      Spark Timing Error
      C

      221
      Spark Timing Error
      C

      222
      Loss Of Ignition Diagnostic Module Signal RH Side (Dual Plug EI)
      C

      223
      Loss Of Dual Plug Ignition Control (Dual Plug EI)
      C

      224
      PCM Detected Coil 1, 2, 3 Or 4 Primary Circuit Failure (EI)
      C

      Erratic Ignition Diagnostic Module Input To Processor
      C

      Loss Of Tack Input To Processor/SPOUT Circuit Grounded (5.8L)
      C

      225
      Knock Not Sensed During Dynamic Response Test KOER
      R

      226
      Ignition Diagnostic Module Signal Not Received (EI)
      O

      232
      PCM Detected Coil 1, 2, 3 Or 4 Primary Circuit Failure (EI)
      C

      238
      PCM Detect Coil 4 Primary Circuit Failure
      C

      244
      Cylinder Identification Sensor Circuit Failure (2.0L)
      R

      311
      AIR System Inoperative/AIR System Inoperative During KOER (Bank No. 1 With Dual HO2S)
      R

      312
      AIR Misdirected During KOER
      R

      313
      AIR Not Bypassed During KOER
      R

      314
      AIR System Inoperative During KOER
      R

      326
      EGR Temperature Sensor Circuit Above Maximum Voltage (2.0L, 2.3L HSC & 3.0L SHO)
      C

      Pressure Feedback EGR Circuit Voltage Low (Others)
      C/R

      327
      EGR Circuit Below Minimum Voltage
      C/O/R

      328
      EGR Valve Position Sensor Closed Valve Voltage Lower Than Expected
      C/O/R

      332
      Insufficient EGR Flow Detected
      C/R

      334
      EGR Valve Position Sensor Closed Valve Voltage Higher Than Expected
      C/O/R

      335
      Pressure Feedback EGR Sensor Voltage Higher Or Lower Than Expected During KOEO
      O

      336
      Pressure Feedback EGR Circuit Voltage Higher Than Expected
      C/R

      337
      EGR Valve Position/Pressure Feedback EGR Circuit Above Maximum Voltage
      C/O/R

      338
      Engine Coolant Temperature Lower Than Expected
      C

      339
      Engine Coolant Temperature Higher Than Expected
      C

      341
      Octane Adjust Service Pin Open
      O

      381
      Erratic A/C Compressor Clutch Cycling
      C

      411
      Cannot Control RPM During KOER Low RPM Check
      R

      412
      Cannot Control RPM During KOER High RPM Check
      R

      415
      Idle Air Control Solenoid
      C

      416
      Idle Air Control Solenoid
      C

      452
      Insufficient Input From Vehicle Speed Sensor To PCM
      C

      511
      Read Out Memory Test Failure KOEO
      C/O/R

      512
      Keep Alive Memory Test Failure
      C

      513
      PCM Internal Voltage Failure (KOEO)
      C/O/R

      519
      Power Steering Pressure Switch Circuit Open KOEO
      O

      521
      Power Steering Pressure Switch Circuit Did Not Change States KOER
      R

      522
      Vehicle Not In Park Or Neutral During KOEO
      O

      524
      Low Speed Fuel Pump Circuit Open
      C/O

      525
      Vehicle In Gear With A/C On
      C/O

      526
      Neutral Position Switch Circuit Closed, A/C On
      O

      527
      Neutral Drive Switch Circuit Open, A/C On
      O

      528
      Clutch Position Switch Circuit Failure
      C

      529
      Data Communication Link Or Electronic Engine Controller Fault
      C

      533
      Data Communication Link To Electronic Instrument Cluster Fault
      C

      536
      Brake On/Off Circuit Failure/Not Actuated During KOER
      C/R

      538
      Insufficient RPM Change During KOER Dynamic Response Test
      R

      538
      Invalid Cylinder Balance Test Due To Throttle Movement During Test
      R

      538
      Invalid Cylinder Balance Test Due To Cylinder Identification Sensor Circuit Failure
      R

      539
      A/C On/Defrost On During KOEO
      O/R

      542
      Fuel Pump Circuit Open–PCM To Motor Ground
      C/O

      543
      Fuel Pump Circuit Open–Battery To Powertrain Control Module (PCM)
      C/O

      551
      Intake Air Control Circuit Failure KOEO
      O

      552
      AIR Bypass Circuit Failure KOEO
      O

      553
      AIR Bypass Circuit Failure KOEO
      O

      554
      Fuel Pump Relay Control Circuit Failure
      O

      556
      Fuel Pump Relay Primary Circuit Failure
      C/O

      557
      Low Speed Fuel Pump Primary Circuit Failure
      C/O

      558
      EGR Vacuum Regulator Circuit Failure
      O

      559
      A/C On Relay Circuit Failure
      O

      563
      High Speed Electric Fan Circuit Failure
      O

      564
      Electric Fan Circuit Failure
      O

      565
      Canister Purge Circuit Failure KOEO
      O

      566
      Shift Solenoid Circuit Failure KOEO
      O

      569
      Auxiliary Canister Purge Circuit Failure
      O

      571
      EGR Circuit Failure
      O

      572
      EGR Circuit Failure
      O

      578
      A/C Pressure Sensor Circuit
      C

      579
      Insufficient A/C Pressure Change
      C

      581
      Power To Fan Circuit Over Current
      C

      582
      Fan Circuit Open
      O

      583
      Power To Fuel Pump Over Current
      C

      584
      Power Ground Circuit Open
      C

      585
      Power To A/C Clutch Over Current
      C

      586
      A/C Clutch Circuit Open
      C

      587
      Vehicle Control Relay Module Communication Failure
      C/O

      617
      1–2 Shift Error
      C

      618
      2–3 Shift Error
      C

      619
      3–4 Shift Error
      C

      621
      Shift Solenoid 1 Circuit Failure KOEO
      C/O

      622
      Shift Solenoid 2 Circuit Failure KOEO
      C/O

      623
      Transmission Control Indicator Lamp Circuit Failure
      C/O

      624
      Electronic Pressure Control Circuit Failure
      C/O

      625
      Hard Fault Is Present (5.8L)
      C/O/R

      625
      Electronic Pressure Control Driver Open In PCM (Others)
      C/.O

      626
      Converter Clutch Solenoid Circuit Failure KOEO
      O

      627
      Torque Converter Clutch Solenoid Circuit Failure
      O

      628
      Excessive Torque Converter Clutch Slippage
      C

      629
      Torque Converter Clutch Solenoid Circuit Failure
      C

      631
      Transmission Control Indicator Lamp Circuit Failure KOEO
      O

      632
      Torque Converter Solenoid Circuit Did Not Change States During KOER
      C

      633
      4 X 4 Switch Closed During KOEO
      O

      634
      Manual Lever Position Sensor Voltage Higher Or Lower Than Expected
      C/O

      636
      Transmission Fluid Temperature Higher Or Lower Than Expected
      O/R

      637
      Transmission Fluid Temperature Sensor Circuit Above Maximum Voltage
      C/O

      638
      Transmission Fluid Temperature Sensor Circuit Below Minimum Voltage
      C/O

      639
      Insufficient Input From Turbine Speed Sensor
      C/R

      641
      Shift Solenoid 3 Circuit Failure
      C/O

      643
      Torque Converter Clutch Circuit Failure
      C/O

      645
      Improper Gear Ratio In 1st Gear
      C

      646
      Improper Gear Ratio In 2nd Gear
      C

      647
      Improper Gear Ratio In 3rd Gear
      C

      648
      Improper Gear Ratio In 4th Gear
      C

      649
      Electronic Pressure Control Higher Or Lower Than Expected
      C

      651
      Electronic Pressure Control Circuit Failure
      C

      652
      Torque Converter Clutch Solenoid Circuit Failure
      C

      653
      Torque Converter Solenoid Did Not Change States During KOER
      R

      654
      Manual Lever Position Sensor Indicating Not In Park During Self Test
      O

      655
      Manual Lever Position Sensor Indicating Not In Neutral During Self Test


      656
      Torque Converter Clutch Slippage Error
      C

      657
      Transmission Over Temp Condition
      C

      659
      High Vehicle Speed In Park Indicated
      R

      662
      Shift Solenoid 2 Circuit
      O

      667
      Transmission Range Sensor Circuit Below Minimum Voltage
      C/O

      668
      Transmission Range Sensor Circuit Above Maximum Voltage
      C/O

      675
      Transmission Range Sensor Circuit Voltage Out Of Range
      O/R

      998
      Hard Fault Present
      O/R

      96 & newer vehicles are OBD2 systems
      and REQUIRE A SCANNER, unless otherwise stated.
      Warning: Please check for manufacturer specific codes and
      confirm the trouble code descriptions with an appropriate manual.
      Disclaimer: We cannot guarantee the accuracy of all information.
      Please confirm the information with an appropriate manual.
      We try and make them as accurate as we can, but sometimes we all make mistakes.
       
      Last edited: June 29, 2008
    2. Support EF

      Join the Elite Explorers for $20

      Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose fix problems yourself, and learn which modifications work without having to experiment on your own. Elite Explorer members see practically no ads, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create more private Conversations, and more. Join Today. Your support is greatly appreciated.


      to hide adverts.
    3. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars
      http://www.thorssell.net/hbook/2digit.html has a list of 2 digit codes:

      EEC IV 2 DIGIT CODES
      [EEC Tests]

      NOTE: When you see "is/was" listed for a code:
      For a HARD fault code the sensor IS out of range right now.
      For a MEMORY code, it WAS out of range at one time (possible intermittent wire etc.).

      Some codes pertain to more than one system but there will be only one of the systems on the vehicle.
      For example code 58. A vehicle with a VAT sensor will not have an Idle Tracking Switch.

      Differences in test mode noted as:

      (O) = Key On Engine Off test
      (R) = Key On Engine Running test
      (M) = Memory code

      11 System checks OK -

      12 Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too low)

      13 (O) ISC did not respond properly (extends to touch throttle then retracts for KOEO)
      (R) Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too high)
      (M) ISC sticking, open ITS circuit or TP sticking

      14 Ignition pickup was erratic
      E4OD Transmission diesel RPM sensor

      15 (O) No Keep Alive Memory power to PCM pin 1 or bad PCM (Memory Test Failure)
      (M) KAM (pin 1) was interrupted (was battery disconnected ?)

      16 1.9L & 2.5L - Throttle stop set too high
      2.3L - RPM's too low
      (O) Electronic ignition - IDM circuit fault

      17 1.9L & 2.5L - Throttle stop set too low

      18 (R) Check base timing & advance function
      (M) Ignition TACH signal erratic

      19 (O) No Vehicle Power (pins 37 + 57) or bad PCM
      (R) Erratic idle during test (reset throttle & retest)
      Electronic ignition Cylinder ID sensor/circuit problem

      21 Engine Coolant Temperature (ECT) sensor out of range

      22 MAP (vacuum) or BARO signal out of range

      23 Throttle sensor out of range or throttle set too high

      24 Intake Air Temperature (IAT) or Vane Air Temperature (VAT) sensor out of range

      25 Knock sensor not tested (ignore if not pinging)

      26 Mass Air Flow (MAF) or Vane Air Flow (VAF) out of range
      Transmission Oil Temperature (TOT) sensor out of range

      27 Vehicle Speed Sensor problem

      28 Vane Air Temperature (VAT) sensor out of range
      2.3L w/Electronic Ignition - Cyl ID, IDM low or right coil pack failure

      29 Vehicle Speed Sensor problem

      EGR CODES DEPEND ON WHAT SYSTEM TYPE THE VEHICLE IS EQUIPPED WITH:

      EVP is for vehicles equipped with EGR solenoid(s), with or without an EVP sensor

      EVR is for vehicles equipped with an EGR Vacuum Regulator (EVR) and an EGR Valve Position (EVP) sensor

      PFE is for vehicles with Pressure Feedback EGR (PFE) sensor and and an EGR Vacuum Regulator (EVR)

      If you don't know what type of system you have, go to the EVP heading, which is the first one.
      There are pictures under the different headings to help you identify the system.

      31 EVP - (O, R, M) EVP signal is/was out of range
      EVR - (O, R, M) EVP signal is/was low
      PFE - (O, R, M) PFE signal is/was low

      32 EVP - (R) EGR not responding properly during test
      EVR - (O, R, M) EVP signal is/was low
      PFE - (R, M) PFE shows low pressure, EGR not seating or memory, not seating intermittently

      33 ALL - (O, M) EGR did not open/ respond during test or if memory code, did not open intermittently

      34 EVP - (R) EGR did not respond properly during test EVR - (O, R, M) EVP sensor is/was high PFE - (O, R, M) PFE sensor is/was out of range

      35 EVP - (R) Engine RPM's too low to test EGR system
      EVR - (O, R, M) EVP sensor signal is/was high
      PFE - (O, R, M) PFE sensor signal is/was high

      38 Idle Tracking Switch signal was intermittent

      39 Transmission Torque Converter clutch not engaging

      40 SERIES FUEL/AIR INJECTION CODES ON VEHICLES WITH DUAL OXYGEN SENSORS REFER TO THE RIGHT OR REAR SENSOR. EXCEPT: 1984-1988 3.8L ENGINES: LEFT SENSOR

      41 (R) System lean
      (M) System was lean for 15 seconds or more (no HO2S switching)

      42 (R) System rich
      (M) System was rich for 15 seconds or more (no HO2S switching)

      43 (R) HO2S sensor not reading (run at 2000 rpm's for 2 minutes and retest - check for HO2S switching)
      (M) Was lean at WOT for 3 seconds or more

      44 AIR system inoperative

      45 AIR not Diverting (AIRD)
      Electronic Ignition - coil primary circuit failure

      46 AIR Bypass (AIRB) not working
      Electronic Ignition - primary circuit failure coil 2

      47 Low flow unmetered air (check for small vacuum leaks, injector o'rings, gaskets etc.)
      E4OD transmission 4x4 switch/circuit problem

      48 High flow unmetered air (check for large vacuum leak, inlet hoses etc.)
      Electronic Ignition - coil primary circuit failure

      49 Electronic Ignition - spout signal circuit problem
      Transmission 1/2 shift problem

      51 Engine Coolant Temperature (ECT) sensor signal is/was too high

      52 Power Steering Pressure Switch/circuit open
      (R) Did you turn wheel during test ?

      53 Throttle Position sensor too high

      54 Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal high

      55 No or low (under 7.5 V) Key Power to PCM pin 5

      56 Vane Air Flow (VAF) or Mass Air Flow (MAF) sensor high
      Transmission Oil Temperature sensor too high

      57 Intermittent in Park/Neutral/ Switch or Neutral Pressure switch circuit
      1990 Scorpio - Octane jumper installed (information only code - to inform you if it is installed or not)

      58 Idle Tracking Switch (ITS) signal problem
      Vane Air Temperature (VAT) sensor out of range or open

      59 AXOD 4/3 circuit fault
      3.0L SHO - Low speed fuel pump circuit problem
      Transmission 2/3 shift problem
      1990 Scorpio - Idle jumper installed (information only code - to inform you if it is installed or not)

      61 Engine Coolant Temperature (ECT) sensor is or was too low

      62 AXOD (KOEO only) 3/2 circuit short to ground
      AXOD (KOEO AND KOER) 4/3 circuit failure
      E4OD excessive converter clutch slippage

      63 Throttle Position Sensor (TPS) signal too low

      64 Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal low or grounded

      65 Check intermittent HO2S (signal or ground)
      (R) E4OD truck - cycle OD cancel switch after engine ID is received
      1984 3.8L ONLY - O, M Battery voltage high (check for electrical system overcharging)

      66 Vane Air Flow (VAF) or Mass Air Flow (MAF) signal low
      Transmission Oil Temperature (TOT) signal low (possibly grounded)

      67 Park/Neutral circuit fault
      Transmission Manual Lever Position (MLP) sensor circuit
      (M) Intermittent Park Neutral Position (PNP) sensor fault

      68 Idle Tracking Switch (ITS) circuit (possibly grounded)
      Vane Air Temperature (VAT) sensor out of range or grounded
      3.8L AXOD -Transmission Temperature Switch (TTS) open
      Electronic Transmission - Transmission Oil Temperature (TOT) sensor was overheated

      69 AXOD transmission (O) 3/2 switch closed (possible short circuit)
      AXOD (M) 3/2 switch open (poss short to power)
      E4OD 3/4 shift problem

      70 (M) 3.8L AXOD - Data link to instrument cluster fault. Service any other EEC codes, erase memory and retest.
      If code is still present refer to instrument cluster diagnosis manual.

      71 (M) 1.9L TBI, 2.3L TBI, 2.5L TBI - ITS signal was grounded when throttle should have been opening ITS
      ISC motor problem or Idle Tracking Switch (ITS) signal wire shorted to ground
      (M) 1.9L MFI - PCM re-initialized. Possible electrical noise, case ground or intermittent VPWR problem
      (M) 3.8L AXOD - Data link to instrument cluster fault - See code 70

      72 (R) No MAP or MAF change in "goose" test - retest, check for frequency or voltage change
      (M) 1.9L MFI - VPWR circuit to PCM was intermittent
      (M) 2.3L T/C - PCM re-initialized. Possible electrical noise, case ground or intermittent VPWR problem
      (M) 3.8L AXOD - Message center data link circuit fault - See code 70

      73 (O) Rerun test, if 73 is still output replace TPS
      (R) No Throttle Position Sensor (TPS) change in "goose" test. Must get at least 25% throttle rotation

      74 Was brake depressed after engine ID was received ?
      Brake On Off (BOO) signal open or short to ground

      75 Brake On Off (BOO) signal shorted to power

      76 Vane Air Flow (VAF) did not respond to "goose" test

      77 System did not receive "goose" test - see TESTS

      78 (M) VPWR circuit to PCM was intermittent or the PCM is bad

      79 A/C is on or pin 10 is shorted to power

      80 SERIES CODES GENERALLY ARE CIRCUIT PROBLEMS THAT COULD BE WIRING, RELAY OR SOLENOID RELATED.
      ONLY ONE OF THE CIRCUITS LISTED UNDER THE CODE IS USED ON EACH VEHICLE. THE FAULT IS IN WHICHEVER SOLENOID OR CIRCUIT IS PRESENT ON THE VEHICLE

      81 Boost control solenoid
      AIRD solenoid
      3.0L SHO - Inlet Air Solenoid

      82 2.3L TC - Fan Control wire shorted to ground
      AIRB solenoid
      3.8L SC - Super Charger Bypass Solenoid

      83 High Electro Drive Fan circuit fault
      EGR Control solenoid
      3.0L SHO - Low Speed Fuel Pump Relay circuit

      84 EGR Vacuum Regulator
      EGR cutoff solenoid
      EGR Vent solenoid

      85 2.3L T/C Automatic - 3/4-4/3 Shift solenoid
      CANP solenoid (ALL 1989)
      (M) 1.9L MFI - System has corrected rich condition

      86 2.3L or 2.9L Truck - A4LD 3/4 shift solenoid
      (M) 1.9L MFI - System has corrected lean condition

      87 (O) Fuel pump circuit fault (check inertia switch)
      Vehicles with 2BBL carb - Temperature Compensated Accelerator Pump Solenoid
      (M) intermittent in fuel pump primary circuit
      NOTE: On some Escorts with automatic seat belts this code is normal IN MEMORY due to the wiring

      88 Throttle Kicker Solenoid
      Variable Voltage Choke relay circuit fault
      Fan Control circuit fault
      A4LD - Converter Clutch Override solenoid
      Electronic Ignition - IDM, DPI or spout circuit fault

      89 A4LD - Converter Clutch Override solenoid
      AXOD Torque Converter Control solenoid circuit
      Exhaust Heat Control (heat riser) solenoid circuit

      90 SERIES FUEL/AIR INJECTION CODES ON VEHICLES WITH DUAL OXYGEN SENSORS REFER TO THE LEFT OR FRONT SENSOR. EXCEPT: 1984-1988 3.8L ENGINES: RIGHT SENSOR

      91 (R, M) System running lean
      Transmission SS 1 circuit/solenoid problem

      92 (R) System running rich
      Transmission SS 2 circuit/solenoid problem

      93 (O) Throttle linkage binding or bad ISC motor (R) HO2S not reading
      Transmission TCC circuit/solenoid problem

      94 AIR system inoperative
      Transmission TCC circuit/solenoid problem

      95 (O) Fuel pump: open, bad ground or always on
      (R) AIR not Diverting (AIRD)
      (M) Possible bad fuel pump ground or open between fuel pump and pin 8 at PCM (Fuel Pump Monitor signal)

      96 (O) Fuel pump monitor circuit shows no power
      (R) AIR Bypass (AIRB) not working
      (M) (Service 87 code first if present) Fuel pump relay or battery power feed was open

      97 E4OD OD cancel light circuit failure

      98 (R) Did not pass KOEO yet (Get 11 in KOEO first)
      Transmission EPC circuit/solenoid failure

      99 (R) ISC needs to learn (Let idle for 2 minutes; Erase memory and retest)
      Transmission EPC circuit/solenoid failure
      [EEC Tests]

      http://www.thorssell.net/hbook/3digit.html has a list of 3 digit codes:

      EEC IV 3 DIGIT CODES
      [EEC Tests]

      Applicable only to some 1991 and up vehicles

      NOTE: When you see "is/was" listed for a code:
      For a HARD fault code the sensor IS out of range right now.
      For a MEMORY code, it WAS out of range at one time (possible intermittent wire etc.).

      Differences in test mode noted as:

      (O) =Key On Engine Off test
      (R) =Key On Engine Running test
      (M) =Memory code

      111 System checks OK

      112 (O,M) Intake Air Temperature (IAT) sensor is/was low or grounded

      113 (O,M) IAT sensor is/was high or open

      114 (O,R) IAT sensor out of range

      116 (O,R) Engine Coolant (ECT) sensor out of range

      117 (O,M) ECT sensor is/was low or grounded

      118 (O,M) ECT sensor is/was high or open

      121 (O,R,M) Throttle Position (TP) sensor out of range

      122 (O,M) TP low (possibly grounded or open circuit)

      123 (O,M) TP is/was high or short to power

      124 (M) TP voltage was higher than expected

      125 (M) TP voltage was lower than expected

      126 (O,R,M) MAP or BARO sensor out of range

      128 (M) MAP vacuum has not been changing - check vacuum lines

      129 (R) No MAP or Mass Air Flow sensor change during "goose" test

      136 (R) Oxygen sensor not switching/system lean Left or Front HO2S

      137 (R) Oxygen sensor not switching/system rich Left or Front HO2S

      138 (R) Fault in Cold Start Injector circuit

      139 (M) Oxygen sensor not switching Left or Front HO2S

      144 (M) Oxygen sensor not switching Single, Right or Rear HO2S

      157 (R,M) Mass Air Flow signal is/was low or grounded

      158 (O,R,M) MAF sensor is/was high or short to power

      159 (O,R) MAF sensor is/was out of range

      167 (R) No Throttle Position sensor change in "goose" test (must get at least 25% rotation)

      171 (M) Oxygen sensor not switching - system was at adaptive limits - Single, Right or Rear HO2S

      172 (R,M) Oxygen sensor not switching - system is or was lean - Single, Right or Rear HO2S

      173 (R,M) Oxygen sensor not switching - system is or was rich - Single, Right or Rear HO2S

      174 (M) Oxygen sensor was slow in switching Single, Right or Rear HO2S

      175 (M) Oxygen sensor not switching - system was at adaptive limits - Left or Front HO2S

      176 (M) Oxygen sensor not switching - system is or was lean Left or Front HO2S

      177 (M) Oxygen sensor not switching - system was rich Left or Front HO2S

      178 (M) Oxygen sensor was slow in switching Left or Front HO2S

      179 (M) Fuel system was rich at part throttle Single, Right or Rear HO2S

      181 (M) Fuel system was lean at part throttle Single, Right or Rear HO2S

      182 (M) Fuel system was rich at idle Single, Right or Rear HO2S

      183 (M) Fuel system was lean at idle Single, Right or Rear HO2S

      184 (M) Mass Air (MAF) output higher than expected

      185 (M) Mass Air (MAF) output lower than expected

      186 (M) Injector pulse width longer than expected or Mass Air Flow (MAF) lower than expected

      187 Injector pulse width shorter than expected or Mass Air Flow (MAF) higher than expected

      188 (M) Fuel system was rich at part throttle - Left or Front HO2S

      189 (M) Fuel system was lean at part throttle - Left or Front HO2S

      191 (M) Fuel system was rich at idle - Left or Front HO2S

      192 (M) Fuel system was lean at idle - Left or Front HO2S

      193 Failure in Flexible Fuel (FF) sensor circuit

      194 (M) Perform cylinder balance test to check for inoperative injectors

      195 (M) Perform cylinder balance test to check for inoperative injectors

      211 (M) Ignition PIP signal was erratic or missing

      212 (M) Ignition TACH signal was erratic (module/wiring) or SPOUT circuit fault

      213 (R) Ignition SPOUT or SAW circuit open or shorted

      214 (M) Error in Cylinder ID (CID) circuit or signal

      215 (M) Primary circuit failure - ignition coil 1

      216 (M) Primary circuit failure - ignition coil 2

      217 (M) Primary circuit failure - ignition coil 3

      218 (M) IDM signal open or high or left coil pack failure

      219 (M) SPOUT circuit failure, timing defaulted to 10 degrees - follow code 213 diagnosis

      222 (M) IDM open or high or right coil pack failure

      223 (M) Dual Plug (DPI), SPOUT or IDM circuit fault

      224 (M) Failure in ignition coil primary circuit

      225 (R) Knock sensor not tested (ignore if not pinging)

      226 (O) Ignition Diagnostic Monitor (IDM) signal fault

      232 (M) EI primary coil circuit failure

      238 (M) EI primary circuit failure - ignition coil 4

      311 (R) AIR system not working - Single, Right or Rear HO2S

      312 (R) AIR not diverting

      313 (R) AIR not bypassing

      314 (R) AIR inoperative, Left or Front HO2S

      326 (R,M) Pressure Feedback EGR shows low pressure EGR not seating or not seating intermittently

      327 (O,R,M) EGR feedback signal is/was low

      328 (O,R,M) EGR Valve Position (EVP) is/was low

      332 (R,M) EGR did not open/respond during test or if memory code, did not open intermittently

      334 (O,R,M) EVP sensor is/was high

      335 (O) EGR feedback signal is/was out of range

      336 (O,R,M) PFE sensor signal is/was high

      337 (O,R,M) EGR feedback signal is/was high

      338 (M) Cooling system did not heat up (check cooling system / thermostat operation)

      339 (M) Cooling system overheated (check cooling system / thermostat operation)

      341 (O) Octane jumper installed (information only code to notify you if it is installed)

      411 (R) Idle speed system not controlling idle properly (generally idle too high)

      412 (R) Idle speed system not controlling idle properly (generally idle too low)

      452 (M) Vehicle Speed Sensor (VSS) problem

      511 (O) No power to PCM pin 1 or bad PCM (processor)

      512 (M) Memory power (PCM pin 1) was interrupted - Was battery disconnected ?

      513 (O) Replace processor (PCM) (internal failure)

      519 (O) PSP switch/circuit open

      521 (R) Wheel not turned during test or PSP problem

      522 (O) Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault Transmission MLP sensor out of range in park

      524 Problem in low speed fuel pump circuit

      525 (O,M) Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault

      528 (M) System shows voltage at pin 10 (is A/C on ?) or pin 30 (PNP, CPP switch)

      529 (M) Data Communications Link to processor failure
      Service any EEC codes, erase memory and retest. If code is still present refer to instrument cluster diagnosis manual.

      533 (M) Data Communications Link to instrument cluster failure - see 529

      536 (O,R,M) Brake On Off open or shorted to ground

      538 (R) System did not receive "goose" test - TESTS

      539 (O) System shows voltage at PCM pin 10. Is A/C on ?

      542 (O,M) Fuel pump open, bad ground or always on -

      543 (O) Fuel pump monitor circuit shows no power (M) (Service 556 code first if present) Fuel pump relay or battery power feed was open

      551 Problem in Intake Manifold Runner Control (IMRC) solenoid/circuit

      552 (O) AIRB solenoid/circuit failure

      553 (O) AIRD solenoid/circuit failure

      554 (O) Fuel Press Regulator Control solenoid/circuit fault

      556 (O,M) Fuel pump relay primary circuit fault

      557 (O,M) Low speed pump relay primary circuit fault

      558 (O) EGR vacuum regulator solenoid/circuit failure

      559 (O) A/C relay primary circuit fault

      563 (O) High Fan Control (HFC) circuit failure

      564 (O) Fan Control (FC) circuit failure

      565 (O) Canister Purge 1 solenoid/circuit failure

      566 (O) transmission 3/4 shift solenoid/circuit

      569 (O) Canister Purge 2 solenoid/circuit failure

      578 (M) A/C pressure sensor VREF short to ground

      579 (M) ACP sensor did not change with A/C on

      581 (M) Cooling fan current was excessive

      582 (O) Open cooling fan circuit

      583 (M) Fuel pump current was excessive

      584 (M) Open power ground circuit

      585 (M) A/C clutch current was excessive

      586 (M) Open circuit in A/C clutch

      587 (O, M) Communication problem between PCM and Variable Control Relay Module (VCRM)

      617 (M) Transmission shift failure (1/2 shift)

      618 (M) Transmission shift failure (2/3 shift)

      619 (M) Transmission shift failure (3/4 shift)

      621 (O) Solenoid/circuit failure - shift solenoid 1

      622 (O) Solenoid/circuit failure - shift solenoid 2

      624 (O,M) Solenoid/circuit failure -Electronic Pressure Control (EPC) current is high

      625 (O,M) Solenoid/circuit failure - Electronic Pressure Control (EPC) current is low

      626 (O) Transmission Coast Clutch (CCS) Solenoid/circuit fault

      627 (O) Torque Converter Clutch circuit fault

      628 (M) Excessive converter clutch slippage

      629 (O,M) Torque Converter Clutch circuit fault

      631 (O) Overdrive Cancel Light circuit problem

      632 (R) E4OD - Transmission Control Switch (TCS) should be cycled once between engine ID and Goose test

      633 (O) 4x4L switch should be in 4x2 or 4x4 high for the test

      634 (O,M) Park/Neutral Position (PNP) or Clutch Pedal Position (CPP) circuit fault
      Electronic shift transmission - Manual Lever Position (MLP) sensor out of range in PARK

      636 (O,R) Transmission Oil Temperature (TOT) sensor out of range

      637 (O,M) TOT sensor is/was high or open

      638 (O,M) TOT sensor is/was low or grounded

      639 (R,M) Transmission Speed sensor (TSS) circuit fault

      641 (O) Transmission solenoid/circuit failure Shift Solenoid 3

      643 (O)(M) Torque Converter Clutch (TCC) circuit

      645 (M) Transmission 1st gear failure

      646 (M) Transmission 2nd gear failure

      647 (M) Transmission 3rd gear failure

      648 (M) Transmission 4th gear failure

      649 (M) Transmission EPC system failure

      651 (M) Transmission EPC solenoid/circuit fault

      652 (O) Torque Converter Clutch (TCC) circuit fault

      654 (O) Transmission selector not in PARK

      656 (M) Torque Converter Clutch (TCC) slip

      657 (M) Transmission temperature was excessive

      998 (R) Did not pass Key On Engine Off test yet (Get 111 in KOEO first)
      (O) Transmission Electronic Pressure Control (EPC) solenoid/circuit fault [EEC Tests]
       
      Last edited: March 27, 2008
    4. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars
      http://www.thorssell.net/hbook/eectest.html has an excellent article on how to perform an EEC-IV self test.

      Electronic Engine Control self test for Ford vehicles with EEC IV
      WARNING!
      FOLLOW STANDARD SAFETY PRACTICES WHEN WORKING ON A VEHICLE INCLUDING BUT NOT LIMITED TO:
      Transmission in Park or Neutral and the driven wheels off the ground or chocked when cranking/running the engine.
      Check fan blade for cracks and do not stand next to the fan when engine is running.
      Use caution when working on fuel systems, which can remain pressurized for a long period after the key is turned off.
      No smoking around fuel.
      Watch for electric fan which can come on at any time.
      Watch out for hot and/or moving parts.
      When working on a no-start vehicle, use a neon spark tester to check for spark and ground the coil wire to prevent accidental starting if spark should occur while testing.
      Watch out for high voltage secondary circuits.
      If you are not sure of the safety of any operation DO NOT DO IT. ASK SOMEONE!

      CODE TYPES AND FORMATS.

      Codes are output as a series of pulses. The following charts show the (approximate) timing of the various code pulses.

      NOTE: Two digit codes are shown. Three digit codes have similar timing. It just takes a little practice to distinguish between two and three digit types.
      [​IMG]

      --------------------------------------------------------------------------------


      TESTS
      NOTE: Vehicle should be fully warmed for all tests.

      HOOKUP

      See figure below. EEC IV vehicles have two connectors for self testing the system. They are located on the firewall or the left or right front fender. The large connector contains the self test output (STO) and ground (SIG RTN). The small pigtail is the self test input (STI).
      [​IMG]
       
    5. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars
      WWW.TheRangerStation.Com has a list of 2 digit codes in this link: http://www.therangerstation.com/tech_library/2digitcodes.html

      2-Digit Codes (All Fords)

      Differences in test mode noted as:
      (O) = Key On Engine Off test
      (R) = Key On Engine Running test
      (M) = Memory code

      Code Definition:

      11
      System checks OK
      12
      Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too low) - ISC
      13 (O) ISC did not respond properly (extends to touch throttle then retracts for KOEO) - ISC
      (R) Idle Speed Control motor or Air Bypass not controlling idle properly (generally idle too high)
      (M) ISC sticking, open ITS circuit or TP sticking
      14 Ignition pickup was erratic - Ignition Systems
      E4OD Transmission diesel RPM sensor - Diesel RPM sensor
      15 (O) No Keep Alive Memory power to PCM pin 1 or bad PCM (Memory Test Failure)
      (M) KAM (pin 1) was interrupted (was battery disconnected ?)
      16 1.9L & 2.5L - Throttle stop set too high - IDLE or Idle Set Procedures
      2.3L - RPM's too low - IDLE
      (O) Electronic ignition - IDM circuit fault - Ignition Systems
      17 1.9L & 2.5L - Throttle stop set too low - IDLE
      18 (R) Check base timing & advance function - Timing Tests
      (M) Ignition TACH signal erratic - Ignition Systems
      19 (O) No Vehicle Power (pins 37 + 57) or bad PCM VPWR Diagnosis
      (R) Erratic idle during test (reset throttle & retest) - Idle Set Procedures
      Electronic ignition Cylinder ID sensor/circuit problem - Ignition Systems
      21 Engine Coolant Temperature (ECT) sensor out of range - ECT
      22 MAP (vacuum) or BARO signal out of range - MAP
      23 Throttle sensor out of range or throttle set too high - TPS
      24 Intake Air Temperature (IAT) or Vane Air Temperature (VAT) sensor out of range - IAT VAT
      25 Knock sensor not tested (ignore if not pinging) - KS
      26 Mass Air Flow (MAF) or Vane Air Flow (VAF) out of range - MAF VAF
      Transmission Oil Temperature (TOT) sensor out of range - Transmissions
      27 Vehicle Speed Sensor problem - VSS
      28 Vane Air Temperature (VAT) sensor out of range - VAT
      2.3L w/Electronic Ignition - Cyl ID, IDM low or right coil pack failure - Ignition Systems
      29 Vehicle Speed Sensor problem - VSS
      EGR CODES DEPEND ON WHAT SYSTEM TYPE THE VEHICLE IS EQUIPPED WITH:
      EVP is for vehicles equipped with EGR solenoid(s), with or without an EVP sensor
      EVR is for vehicles equipped with an EGR Vacuum Regulator (EVR) and an EGR Valve Position (EVP) sensor
      PFE is for vehicles with Pressure Feedback EGR (PFE) sensor and and an EGR Vacuum Regulator (EVR)
      If you don't know what type of system you have, go to the EVP heading, which is the first one.
      There are pictures under the different headings to help you identify the system.
      31 EVP - (O, R, M) EVP signal is/was out of range - EVP
      EVR - (O, R, M) EVP signal is/was low - EVR
      PFE - (O, R, M) PFE signal is/was low - PFE
      32 EVP - (R) EGR not responding properly during test - EVP
      EVR - (O, R, M) EVP signal is/was low - EVR
      PFE - (R, M) PFE shows low pressure, EGR not seating or memory, not seating intermittently - PFE
      33 ALL - (O, M) EGR did not open/ respond during test or if memory code, did not open intermittently - EVP EVR PFE
      34 EVP - (R) EGR did not respond properly during test - EVP
      EVR - (O, R, M) EVP sensor is/was high - EVR
      PFE - (O, R, M) PFE sensor is/was out of range - PFE
      35 EVP - (R) Engine RPM's too low to test EGR system - EVP
      EVR - (O, R, M) EVP sensor signal is/was high - EVR
      PFE - (O, R, M) PFE sensor signal is/was high - PFE
      38 Idle Tracking Switch signal was intermittent - ISC
      39 Transmission Torque Converter clutch not engaging - Transmissions
      40 SERIES FUEL/AIR INJECTION CODES ON VEHICLES WITH DUAL OXYGEN SENSORS REFER TO THE RIGHT OR REAR SENSOR. EXCEPT: 1984-1988 3.8L ENGINES: LEFT SENSOR
      41 (R) System lean - Fuel control
      (M) System was lean for 15 seconds or more (no HO2S switching) - Fuel control
      42 (R) System rich - Fuel control
      (M) System was rich for 15 seconds or more (no HO2S switching) - Fuel control
      43 (R) HO2S sensor not reading (run at 2000 rpm's for 2 minutes and retest - check for HO2S switching)
      (M) Was lean at WOT for 3 seconds or more - Fuel control
      44 AIR system inoperative - Air Injection
      45 AIR not Diverting (AIRD) - Air Injection
      Electronic Ignition - coil primary circuit failure - Ignition Systems
      46 AIR Bypass (AIRB) not working - Air Injection
      Electronic Ignition - primary circuit failure coil 2 - Ignition Systems
      47 Low flow unmetered air (check for small vacuum leaks, injector o'rings, gaskets etc.)
      E4OD transmission 4x4 switch/circuit problem - Transmissions
      48 High flow unmetered air (check for large vacuum leak, inlet hoses etc.)
      Electronic Ignition - coil primary circuit failure - Ignition Systems
      49 Electronic Ignition - spout signal circuit problem - Ignition Systems
      Transmission 1/2 shift problem - Transmissions
      51 Engine Coolant Temperature (ECT) sensor signal is/was too high - ECT
      52 Power Steering Pressure Switch/circuit open - PSP
      (R) Did you turn wheel during test ?
      53 Throttle Position sensor too high - TPS
      54 Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal high - IAT VAT
      55 No or low (under 7.5 V) Key Power to PCM pin 5
      56 Vane Air Flow (VAF) or Mass Air Flow (MAF) sensor high - VAF MAF
      Transmission Oil Temperature sensor too high - Transmissions
      57 Intermittent in Park/Neutral/ Switch or Neutral Pressure switch circuit - PNP or Transmissions
      1990 Scorpio - Octane jumper installed (information only code - to inform you if it is installed or not)
      58 Idle Tracking Switch (ITS) signal problem ISC
      Vane Air Temperature (VAT) sensor out of range or open - VAT
      59 AXOD 4/3 circuit fault - Transmissions
      3.0L SHO - Low speed fuel pump circuit problem - Power / Fuel Pump Circuits
      Transmission 2/3 shift problem - Transmissions
      1990 Scorpio - Idle jumper installed (information only code - to inform you if it is installed or not)
      61 Engine Coolant Temperature (ECT) sensor is or was too low - ECT
      62 AXOD (KOEO only) 3/2 circuit short to ground - Transmissions
      AXOD (KOEO AND KOER) 4/3 circuit failure - Transmissions
      E4OD excessive converter clutch slippage - Transmissions
      63 Throttle Position Sensor (TPS) signal too low TPS
      64 Intake Air Temperature (IAT) or Vane Air Temperature (VAT) signal low or grounded - IAT VAT
      65 Check intermittent HO2S (signal or ground) - Fuel Control
      (R) E4OD truck - cycle OD cancel switch after engine ID is received - Transmissions
      1984 3.8L ONLY - O, M Battery voltage high (check for electrical system overcharging)
      66 Vane Air Flow (VAF) or Mass Air Flow (MAF) signal low - VAF MAF
      Transmission Oil Temperature (TOT) signal low (possibly grounded) - Transmissions
      67 Park/Neutral circuit fault - PNP
      Transmission Manual Lever Position (MLP) sensor circuit - Transmissions
      (M) Intermittent Park Neutral Position (PNP) sensor fault - PNP
      68 Idle Tracking Switch (ITS) circuit (possibly grounded) - ISC
      Vane Air Temperature (VAT) sensor out of range or grounded - VAT
      3.8L AXOD -Transmission Temperature Switch (TTS) open - Transmissions
      Electronic Transmission - Transmission Oil Temperature (TOT) sensor was overheated - Transmissions
      69 AXOD transmission (O) 3/2 switch closed (possible short circuit) - Transmissions
      AXOD (M) 3/2 switch open (poss short to power) - Transmissions
      E4OD 3/4 shift problem - Transmissions
      70 (M) 3.8L AXOD - Data link to instrument cluster fault. Service any other EEC codes, erase memory and retest.
      If code is still present refer to instrument cluster diagnosis manual.
      71 (M) 1.9L TBI, 2.3L TBI, 2.5L TBI - ITS signal was grounded when throttle should have been opening ITS - ISC
      ISC motor problem or Idle Tracking Switch (ITS) signal wire shorted to ground - ISC
      (M) 1.9L MFI - PCM re-initialized. Possible electrical noise, case ground or intermittent VPWR problem - VPWR Diagnosis
      (M) 3.8L AXOD - Data link to instrument cluster fault - See code 70
      72 (R) No MAP or MAF change in "goose" test - retest, check for frequency or voltage change - MAP MAF
      (M) 1.9L MFI - VPWR circuit to PCM was intermittent - VPWR Diagnosis
      (M) 2.3L T/C - PCM re-initialized. Possible electrical noise, case ground or intermittent VPWR problem - VPWR Diagnosis
      (M) 3.8L AXOD - Message center data link circuit fault - See code 70
      73 (O) Rerun test, if 73 is still output replace TPS
      (R) No Throttle Position Sensor (TPS) change in "goose" test. Must get at least 25% throttle rotation - TPS
      74 Was brake depressed after engine ID was received ?
      Brake On Off (BOO) signal open or short to ground - BOO
      75 Brake On Off (BOO) signal shorted to power - BOO
      76 Vane Air Flow (VAF) did not respond to "goose" test - VAF
      77 System did not receive "goose" test - see TESTS
      78 (M) VPWR circuit to PCM was intermittent or the PCM is bad VPWR Diagnosis
      79 A/C is on or pin 10 is shorted to power
      80 SERIES CODES GENERALLY ARE CIRCUIT PROBLEMS THAT COULD BE WIRING, RELAY OR SOLENOID RELATED.
      ONLY ONE OF THE CIRCUITS LISTED UNDER THE CODE IS USED ON EACH VEHICLE. THE FAULT IS IN WHICHEVER SOLENOID OR CIRCUIT IS PRESENT ON THE VEHICLE
      81 Boost control solenoid - Solenoids
      AIRD solenoid - Solenoids and Air Injection
      3.0L SHO - Inlet Air Solenoid - Solenoids
      82 2.3L TC - Fan Control wire shorted to ground - A/C and Fan Circuits
      AIRB solenoid - Solenoids and Air Injection
      3.8L SC - Super Charger Bypass Solenoid - Solenoids
      83 High Electro Drive Fan circuit fault - A/C and Fan Circuits
      EGR Control solenoid - Solenoids
      3.0L SHO - Low Speed Fuel Pump Relay circuit - Power / Fuel Pump Circuits
      84 EGR Vacuum Regulator - Solenoids
      EGR cutoff solenoid - Solenoids
      EGR Vent solenoid - Solenoids
      85 2.3L T/C Automatic - 3/4-4/3 Shift solenoid - Transmissions
      CANP solenoid (ALL 1989) - Solenoids
      (M) 1.9L MFI - System has corrected rich condition - Fuel control
      86 2.3L or 2.9L Truck - A4LD 3/4 shift solenoid - Transmissions
      (M) 1.9L MFI - System has corrected lean condition - Fuel control
      87 (O) Fuel pump circuit fault (check inertia switch) - Power / Fuel Pump Circuits
      Vehicles with 2BBL carb - Temperature Compensated Accelerator Pump Solenoid - Solenoids
      (M) intermittent in fuel pump primary circuit - Power / Fuel Pump Circuits
      NOTE: On some Escorts with automatic seat belts this code is normal IN MEMORY due to the wiring
      88 Throttle Kicker Solenoid - Solenoids
      Variable Voltage Choke relay circuit fault - VVC
      Fan Control circuit fault - A/C and Fan Circuits
      A4LD - Converter Clutch Override solenoid - Transmissions
      Electronic Ignition - IDM, DPI or spout circuit fault - Ignition Systems
      89 A4LD - Converter Clutch Override solenoid - Transmissions
      AXOD Torque Converter Control solenoid circuit - Transmissions
      Exhaust Heat Control (heat riser) solenoid circuit - Solenoids
      90 SERIES FUEL/AIR INJECTION CODES ON VEHICLES WITH DUAL OXYGEN SENSORS REFER TO THE LEFT OR FRONT SENSOR. EXCEPT: 1984-1988 3.8L ENGINES: RIGHT SENSOR
      91 (R, M) System running lean - Fuel control
      Transmission SS 1 circuit/solenoid problem - Transmissions
      92 (R) System running rich - Fuel control
      Transmission SS 2 circuit/solenoid problem - Transmissions
      93 (O) Throttle linkage binding or bad ISC motor ISC (R) HO2S not reading - Fuel control
      Transmission TCC circuit/solenoid problem - Transmissions
      94 AIR system inoperative - Air Injection
      Transmission TCC circuit/solenoid problem - Transmissions
      95 (O) Fuel pump: open, bad ground or always on - Power / Fuel Pump Circuits
      (R) AIR not Diverting (AIRD) - Air Injection
      (M) Possible bad fuel pump ground or open between fuel pump and pin 8 at PCM (Fuel Pump Monitor signal) - Power / Fuel Pump Circuits
      96 (O) Fuel pump monitor circuit shows no power - Power / Fuel Pump Circuits
      (R) AIR Bypass (AIRB) not working - Air Injection
      (M) (Service 87 code first if present) Fuel pump relay or battery power feed was open - Power / Fuel Pump Circuits
      97 E4OD OD cancel light circuit failure - Transmissions
      98 (R) Did not pass KOEO yet (Get 11 in KOEO first)
      Transmission EPC circuit/solenoid failure - Transmissions
      99 (R) ISC needs to learn (Let idle for 2 minutes; Erase memory and retest)
      Transmission EPC circuit/solenoid failure - Transmissions
      Definitions:

      ACT Air Charge Temperature Sensor / BP See MAP /
      EEC Electronic Engine Control System
      ECT Engine Coolant Temperature Sensor
      EGR Exhaust Gas Recirculation Valve
      -- EVP Valve Position Sensor
      EGR / HEGO Heated Exhaust Gas Oxygen Sensor
      KOEO Key On Engine Off
      KOER Key On Engine Running
      MAF Mass Air Flow Sensor
      MAP Manifold Absolute Pressure Sensor
      MLP Manual Lever Position
      PCM Powertrain Control Module
      SPOUT Distributor Jumper to Allow Initial Timing
      TP Throttle Position Sensor
       
    6. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars
      Here is an article from http://www.muscularmustangs.com/test1.php with a lot of good troubleshooting information.

      Checking your Ford Mustang computer codes.
      2 Digit Codes 3 Digit Codes.
      TYPES OF CODES.
      NOTE: Some people have problems distinguishing the different codes. READ THIS SECTION CAREFULLY.
      There are drawings of the code formats at the end of this section.

      FAST CODES.
      Fast codes contain the fault information output in the normal slow codes but are output about 100 times faster.
      These are the first things output on a Key On Engine Off test.

      HARD FAULTS.
      Hard faults are problems that the computer has located RIGHT NOW. Examples are a sensor out of range or a broken wire (open circuit).
      Hard faults are the FIRST set of slow codes output in a Key On Engine Off test. BEFORE the SEPARATOR pulse.
      In a Key On Engine Running test, there are ONLY HARD FAULT codes. These are output right after the fast codes.

      SEPARATOR PULSE.
      The separator pulse is a single pulse that indicates the END of hard fault codes and the BEGINNING of memory codes.
      It will show up as a code 10 on most digital testers.

      MEMORY CODES.
      Memory codes are problems that the computer has noticed in the past. If for example there was a loose wire to a solenoid that only lost contact while driving but was making contact while testing the system there would be NO HARD FAULT CODE. The code would show up IN MEMORY. The same would happen for a sensor that only went out of range occasionally. Memory codes come out AFTER the separator pulse.
      NOTE: The computer will erase the memory after a certain number of engine re-starts if the problem does not repeat itself. The number of re-starts varies from 20 to 80 depending on the year of the vehicle. The later models keep memory longer.

      ENGINE ID.
      The engine ID in a running test is a series of pulses equal to one half the number of engine cylinders. A 4 cylinder engine ID is 2 pulses, a 6 cylinder ID is 3 pulses and an 8 cylinder ID is 4 pulses. A diesel ID is 5.

      GOOSE CODE.
      A "GOOSE" code (also called a dynamic response test) is output during an engine running test. This is a single pulse to signal you to quickly move the throttle approximately 1/2 way down and release. NOTE: Not all engines give a "GOOSE" code.

      CODE FORMATS.
      Codes are output as a series of pulses. The following charts show the (approximate) timing of the various code pulses.
      NOTE: Two digit codes are shown. Three digit codes have similar timing. It just takes a little practice to distinguish between two and three digit types.

      [​IMG]

      TESTS.
      NOTE: Vehicle should be fully warmed for all tests.

      HOOKUP.
      See figure below. EEC IV vehicles have two connectors for self testing the system. They are located on the firewall or the left or right front fender. The large connector contains the self test output (STO) and ground (SIG RTN). The small pigtail is the self test input (STI).

      [​IMG]

      1. Make sure engine is fully warmed. If in doubt, run engine at 2000 rpm for 2 minutes.
      2. Turn ignition off and wait 10 seconds for system to shut off. Make sure A/C is off and transmission is in Park (automatic) or Neutral (manual).
      3. Hook up light and jumper (or a tester if you have one). Turn key to ON (do not start engine).
      4. Fast Codes are output (ignore fast light flashes).
      5. Read hard faults.
      6. Separator Pulse.
      7. Read memory codes.
      8. See code explanations and check components as necessary.
      Use FIRST CODE OUTPUT and retest after any repairs are made.

      KEY ON ENGINE RUNNING (KOER) TEST.

      1. Make sure engine is fully warmed. If in doubt, run engine at 2000 rpm for 2 minutes.
      2. Turn ignition off and wait 10 seconds for system to shut off. Make sure A/C is off and transmission is in Park (automatic) or Neutral (manual).
      3. Hook up light and jumper (or tester if you have one).
      4. Make sure vehicle is safe to run and start engine.
      5. Engine I.D. should be output.
      6. Step on brake and turn steering wheel 1/4 turn.
      7. If a "Goose" pulse is received, move throttle quickly 1/2 way down and release.
      8. Fast Codes are output (ignore).
      9. Read codes.
      10. See code explanations and check components as necessary.
      Use FIRST CODE OUTPUT and retest after any repairs are made.

      CYLINDER BALANCE TEST.
      NOTE: This test is only available on Sequential Fuel Injection (SFI) Engines.
      Start an engine running test and press the accelerator lightly within 2 minutes after the last code is output. The PCM will cancel each cylinder in turn and measure the RPM drop. If any weak cylinders are noted their number will be output as a multiple of 10 (e.g. 30, 40). The output is the actual cylinder number, not the number in the firing order. NOTE: Will not always pinpoint bad injectors.

      WIGGLE TEST.
      Engine running or engine off tests
      Hook up for a self test but do not hook up the self test trigger. Turn key to on. Hook up the trigger, wait 10 seconds and disconnect. Hook up trigger again . Tap suspected sensors (be careful if engine is running), wiggle the wiring harnesses etc. IF the PCM picks up a fault the self test output will pulse and a memory code will be stored (The value of this is questionable. I NEVER located a problem with it. - JT).

      MEMORY ERASE.
      To erase the memory disconnect the self test trigger while the codes are being output. You COULD also disconnect the battery but then the PCM forgets some important running characteristics.

      OUTPUT STATE TEST.
      Run the KOEO test all the way through and leave the test hooked up.
      Cycle throttle 3/4 open and closed while watching tester, light or voltmeter. Self test output will switch with every throttle activation. On some testers (like my old pocket testers) the light will only pulse every other push. But the outputs still switch EVERY time.
      Solenoids (EGR etc.) will switch on or off with every throttle activation (push throttle they're on, push throttle they're off). You should be able to hear clicks as the solenoids switch states. The test will work for most solenoids: AIRB, AIRD, BOOST, EGR, EVR (NOTE: EVR does not click but vacuum cycles).
       
      Last edited: February 6, 2007
    7. Snyder1938

      Snyder1938 New Member

      Joined:
      April 20, 2006
      Messages:
      2
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Mesa, AZ
      Year, Model & Trim Level:
      '94 XLT
      I'm a new member. Found great news on cleaning front axle + hub to cure vibration. Another reoccuring problem is engine code 214, "error in cyl ID". No idea of what to check. 4.0 engine runs fine. Any help appreciated. Thanks.
       
    8. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars
    9. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars
    10. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars
    11. Tbars4

      Tbars4 Moderator Emeritus Elite In Memoriam

      Joined:
      March 4, 2007
      Messages:
      26,530
      Media:
      4
      Likes Received:
      46
      Trophy Points:
      78
      City, State:
      anaheim hills,california
      Year, Model & Trim Level:
      95 ranger 4x4/ 91 X 4x4
      ... I ran across these when searching thru this thread and not being able to find a few hard to find codes for a 1994 X...You may delete and edit as you wish...:salute:
      http://www.justanswer.com/questions/1bqqo-own-94-ford-explorer-recently

      Diagnostic Trouble Codes - 1994
      Ford
      111 System PASS.
      112 ACT sensor circuit grounded.
      113 ACT sensor circuit open.
      114 ACT sensor is out of Self-Test.
      116 ECT sensor is out of Self-Test.
      117 ECT sensor circuit grounded.
      118 ECT sensor circuit open.
      121 TP sensor is out of Self-Test.
      122 TP sensor input is less than Self-Test minimum.
      123 TP sensor input is greater than Self-Test maximum.
      124 TP sensor input voltage is greater than expected.
      125 TP sensor input voltage is less than expected.
      128 MAP vacuum hose damaged or disconnected.
      129 Insufficient MAF input.
      136 HEGO sensor circuit indicates system lean (Right HEGO).
      137 HEGO sensor circuit indicates system rich (Right HEGO).
      139 No HEGO switching (Front Side).
      141 Fuel system indicates lean.
      144 No HEGO switching (Left Side).
      157 MAF sensor circuit open.
      158 MAF sensor shorted to power.
      159 MAF sensor is out of Self-Test.
      167 Insufficient TP input change.
      171 Lack of HEGO switching (Rear Side).
      172 HEGO sensor circuit indicates lean. (Rear Side).
      173 HEGO sensor circuit indicates rich. (Rear Side).
      174 Check for diluted engine oil.
      175 Lack of HEGO switching (Front Side).
      176 HEGO sensor circuit indicates lean. (Front Side).
      177 HEGO sensor circuit indicates rich. (Front Side).
      178 Check for diluted engine oil.
      179 Fuel system at part throttle lean adaptive limit, system rich (Rear Side).
      181 Fuel system at part throttle rich adaptive limit, system lean (Rear Side).
      182 Fuel system at idle lean adaptive limit, system rich (Rear Side).
      183 Fuel system at idle rich adaptive limit, system lean (Rear Side).
      184 MAF sensor input voltage is greater than expected, in range.
      185 MAF sensor input voltage is less than expected, in range.
      186 Closed loop injector pulse width longer than expected.
      187 Closed loop injector pulse width shorter than expected.
      188 Fuel system at part throttle lean adaptive limit, system rich (Front Side).
      189 Fuel system at part throttle rich adaptive limit, system lean (Front Side).
      193 Flexible Fuel sensor circuit failure.
      211 PIP circuit failure.
      212 Loss of tachometer/IDM input.
      213 EEC SPOUT circuit open.
      214 CID circuit failure.
      215 PCM detected coil 1 primary circuit failure.
      216 PCM detected coil 2 primary circuit failure.
      217 PCM detected coil 3 primary circuit failure.
      218 Loss of ignition diagnostic monitor signal-left side.
      219 Spark timing defaulted to 10 degrees, spark output circuit open.
      221 Spark timing error.
      222 Loss of ignition diagnostic monitor signal-right side.
      223 Loss of dual plug inhibit control.
      224 PCM detected coil 1, 2, 3 or 4 primary circuit failure.
      225 Knock not sensed during dynamic response test KOER.
      226 Ignition diagnostic monitor signal not received.
      232 PCM detected coil 1, 2, 3 or 4 primary circuit failure.
      238 PCM detected coil 4 primary circuit failure.
      241 Ignition control module to PCM ignition diagnostic monitor pulse width transmission error.
      244 Cylinder Identification circuit fault present when cylinder balance test requested.
      311 Secondary air injection system inoperative during KOER self-test (bank #1).
      312 Secondary air injection system misdirected during KOER self-test.
      313 Secondary air injection system not bypassed during KOER self-test.
      314 Secondary air injection system inoperative during KOER self-test (bank #2)
      326 PFE sensor circuit voltage lower than expected.
      327 PFE sensor circuit voltage below Self-Test minimum.
      328 Exhaust gas recirculation valve position sensor closed voltage lower than expected.
      332 Insufficient EGR flow.
      334 Exhaust gas recirculation valve position sensor closed voltage higher than expected.
      335 PFE sensor circuit voltage out of Self-Test range.
      336 PFE sensor circuit voltage higher than expected.
      337 PFE sensor circuit voltage above Self-Test maximum.
      338 Engine coolant temperature lower than expected (thermostat test).
      339 Engine coolant temperature higher than expected (thermostat test).
      341 Octane adjust service pin open.
      381 Frequent A/C clutch cycling.
      411 Cannot control RPM during KOER low RPM check.
      412 Cannot control RPM during KOER high RPM check.
      415 Idle Air Control system at maximum adaptive lower limit.
      416 Idle Air Control system at upper adaptive learning limit.
      452 Insufficient input from VSS.
      453 Servo leaking down.
      454 Servo leaking.
      455 Insufficient RPM increase.
      456 Insufficient RPM decrease.
      457 Speed control command switch(s) circuit not functioning.
      458 Speed control command switch(s) stuck/circuit grounded.
      459 Speed control ground circuit open.
      511 ROM test failure.
      512 KAM test failure.
      513 EEC internal voltage failure.
      519 PSPS circuit open.
      521 PSPS circuit did not change.
      522 Vehicle not in PARK or NEUTRAL during KOEO.
      525 Indicates vehicle in gear or A/C "ON" during self-test.
      527 Park/Neutral Position switch circuit open or A/C on KOEO self-test.
      528 Clutch Pedal Position switch circuit failure.
      529 Data Communication Link or PCM circuit failure.
      532 Cluster Control Assembly circuit failure.
      533 Data Communication Link or Electronic Instrument Cluster circuit failure.
      536 Brake On/Off circuit failure/not activated during KOER.
      538 Insufficient RPM change during KOER Dynamic Response Test.
      539 A/C or defrost "ON" during Self-Test.
      542 Fuel pump circuit open, EEC processor to motor ground.
      543 Fuel pump circuit open, battery to EEC processor.
      551 Idle Air Control circuit failure during KOEO self-test.
      552 Secondary Air Injection Bypass circuit failure during KOEO self-test.
      553 Secondary Air Injection Diverter circuit failure during KOEO self-test.
      554 Fuel Pressure Regulator Control circuit failure.
      556 Fuel pump circuit failure.
      557 Low speed fuel pump primary circuit failure.
      Electronic Vacuum regulator circuit failure.
      559 Air Conditioning On relay circuit failure during KOEO self-test.
      562 Pusher fan control primary circuit failure.
      563 High speed Electro Drive Fan circuit failure.
      564 Electro Drive Fan circuit failure
      565 Canister purge (CANP) circuit failure.
      566 3-4 shift solenoid circuit failure during KOEO self-test.
      567 Speed Control Vent (SCVNT) circuit failure.
      568 Speed Control Vacuum (SCVAC) circuit failure.
      569 Auxiliary Canister Purge circuit failure during KOEO self-test.
      571 EGR Atmospheric (EGRA) solenoid circuit failure during KOEO self-test.
      572 EGR Vacuum (EGRV) solenoid circuit failure during KOEO self-test.
      578 A/C pressure sensor circuit shorted.
      579 Insufficient A/C pressure change.
      581 "Power to Fan" circuit over current.
      582 Fan circuit open.
      583 Power to Fuel pump over current.
      584 Variable Control Relay Module (VCRM) power ground circuit open (VCRM Pin 1).
      585 Power to A/C clutch over current.
      586 A/C clutch circuit open.
      587 Variable Control Relay Module communication failure.
      593 Heated Oxygen Sensor (HO2S) heater circuit failure.
      617 1-2 shift error.
      618 2-3 shift error.
      619 3-4 shift error.
      621 Shift solenoid #1 circuit failure.
      622 Shift solenoid #2 circuit failure.
      623 Transmission Control Indicator Light circuit failure.
      624 EPC solenoid or driver failure.
      625 EPC solenoid driver open in EEC processor.
      626 Coast Clutch Solenoid (CCS) circuit failure during KOEO self-test.
      627 Torque Converter Clutch solenoid circuit failure.
      628 Lock-up solenoid circuit failure, excessive clutch slippage.
      629 Lock-up solenoid circuit failure.
      631 Transmission Control Indicator Lamp circuit failure during KOEO self-test.
      632 Transmission Control Switch circuit did not change states during KOER self-test.
      633 4x4 Light switch closed during KOEO self-test.
      634 MLP sensor voltage out of Self-Test range.
      636 Transmission oil temperature sensor voltage out of Self-Test range.
      637 Transmission oil temperature sensor voltage above Self-Test maximum.
      638 Transmission oil temperature sensor voltage below Self-Test minimum.
      639 Insufficient input from turbine speed sensor.
      641 Shift solenoid #3 circuit failure.
      643 Torque Converter Clutch circuit failure.
      645 Incorrect gear ratio obtained for first gear.
      646 Incorrect gear ratio obtained for second gear.
      647 Incorrect gear ratio obtained for third gear.
      648 Incorrect gear ratio obtained for fourth gear.
      649 EPC range failure.
      651 EPC circuit failure.
      652 Torque Converter Clutch solenoid circuit failure.
      653 Transmission Control Switch did not change states during KOER self-test.
      654 Transmission Range sensor not indicating "PARK" during KOEO self-test.
      656 Torque Converter Clutch continuous slip error.
      657 Transmission over temperature condition occurred.
      659 High vehicle speed in park indicated.
      667 Transmission Range sensor circuit voltage below minimum voltage.
      668 Transmission Range circuit voltage above maximum voltage.
      675 Transmission Range sensor circuit voltage out of range. Hard fault present, vehicle is in Failure Mode Effects Management (FMEM).
      998 Hard faults present.
       
    12. Colin2722

      Colin2722 New Member

      Joined:
      January 19, 2010
      Messages:
      35
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Summerville SC
      Year, Model & Trim Level:
      91 XLT
      i just wanted to thank you guys for this endless information. fixed my cel in less then 30 min thanks to this site. it ended up being a dirty vat sensor which was making my exploder jump all over the place. now (for free) i have it running like normal
       
    13. SLDoolittle

      SLDoolittle New Member

      Joined:
      July 10, 2010
      Messages:
      1
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Ga
      Year, Model & Trim Level:
      93xlt
      i bought a Ford Explore about two weeks ago and it was running good and now it seems like it running out of gas even when it has gas i get a code out of the self test of 115 and there is no code in the book. can anyone please help me out ?
       
    14. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars
    15. jenna002

      jenna002 New Member

      Joined:
      March 19, 2012
      Messages:
      4
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      raleigh, n.c.
      Year, Model & Trim Level:
      1994 fordexplorer 4x4
      whys code 341 in your post always in red .I am getting this code. anyone know what this is and how to check and fix?
       
    16. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars
    17. jenna002

      jenna002 New Member

      Joined:
      March 19, 2012
      Messages:
      4
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      raleigh, n.c.
      Year, Model & Trim Level:
      1994 fordexplorer 4x4
      do you mean next to the koeo tester or the other diagnostic testers. does this code affect how your vechicle performs or affect gas mileage?
       
    18. BrooklynBay

      BrooklynBay Moderator & long time member. Staff Member Moderator Elite Explorer

      Joined:
      November 11, 2005
      Messages:
      51,522
      Likes Received:
      126
      Trophy Points:
      93
      City, State:
      Brooklyn, NY
      Year, Model & Trim Level:
      88 89 93 95 96 Aerostars

    Share This Page







    We Support Our Troops!