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Cel p0420

Discussion in 'Stock 1995 - 2001 Explorers' started by 91Bluestreak, June 18, 2011.

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    1. 91Bluestreak

      91Bluestreak New Member

      Joined:
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      City, State:
      Byron Center
      Year, Model & Trim Level:
      96 2Dr Sport 4x4
      96 Explorer Sport 4x4 auto 4.0 OHV
      Code P0420 keeps coming on after I've been driving for a few hours and always when I get off the highway.
      I have already replaced
      Spark plugs and wires
      MagnaFlow cats
      Full mandreal bent cat back exhaust
      replaced the idle air control as it was bad
      Fuel filter

      It runs good but if your hard on it you get the smell like the cat is bad but they have 7,000 miles on them. I've been told to replace the O2 sensors and EGR control valve as the truck has 205,000 miles on it. I dont hear any vacum leaks.
       
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    3. SoNic67

      SoNic67 Well-Known Member

      Joined:
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      City, State:
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      Year, Model & Trim Level:
      2001 V8 (Eddie Bauer) AWD
      The same code on my Mercury Sable was cleared by replacing the O2 sensor AHEAD of cat converter (on the Bank 1). I had 173k miles on it when that happend.
       
    4. swetrid

      swetrid Well-Known Member

      Joined:
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      City, State:
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      Year, Model & Trim Level:
      1999 Eddie Bauer
      Ford has tsb for reprogramming pcm for this code.
      Printable View (12 KB)
      TSB
      00-26-4 MALFUNCTION INDICATOR LAMP (MIL) - MIL ILLUMINATED - DIAGNOSTIC TROUBLE CODE (DTC) P0420 STORED IN MEMORY - VEHICLES EQUIPPED WITH 4.0L OHV ENGINE ONLY
      LAMP - MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED - DIAGNOSTIC TROUBLE CODE (DTC) P0420 STORED IN MEMORY - VEHICLES EQUIPPED WITH 4.0L OHV ENGINE ONLY

      Publication Date: DECEMBER 14, 2000

      FORD: 1996 EXPLORER


      This article is being republished in its entirety to update the Calibration Information.

      ISSUE:
      Some vehicles may exhibit a Malfunction Indicator Lamp (MIL) illumination along with a P0420 Diagnostic Trouble Code (DTC) stored in continuous memory with no driveability concerns. This may be caused by the calibration of the Powertrain Control Module (PCM).

      ACTION:
      If no other failures are observed during normal diagnosis, (physically damaged catalyst, stuck fuel injectors, etc.), reprogram the PCM with the latest level calibration in the application chart. PCM reprogramming should be performed before any emission hardware is replaced. If the vehicle already has the latest calibration, follow normal diagnostic procedures for DTC.

      NOTE: PCM REPROGRAMMING SHOULD BE PERFORMED BEFORE ANY EMISSION HARDWARE IS REPLACED.



      PCM CALIBRATION INFORMATION
      Application Old Part Number (-12A650-) New Part Number (-12A650-) Old Tear Tag New Tear Tag Old Calibration New Calibration NGS/SBDS Qualifier
      Explorer - 49 State M/T F6PF-MC F6PZ-MD MXD2 MXD3 6-57B-R10 6-57B-R10 6-57B Calibration
      Explorer - 49 State M/T F67F-AA F6PZ-MD ABE0 MXD3 6-57B-R00 6-57B-R10 6-57B Calibration
      Explorer - 49 State M/T F67F-AB F6PZ-MD ABE1 MXD3 6-57B-R05 6-57B-R10 6-57B Calibration
      Explorer - 49 State M/T F6PF-MA F6PZ-MD SDO0 MXD3 6-57B-R10 6-57B-R10 6-57B Calibration
      Explorer - 49 State M/T F67F-AC F6PZ-MD ABE2 MXD3 6-57B-R10 6-57B-R10 6-57B Calibration
      Explorer - 49 State M/T F6PF-MB F6PZ-MD MXD0, MXD1 MXD3 6-57B-R10 6-57B-R10 6-57B Calibration

      Explorer - California M/T F6PF-NC F6PZ-ND SDO2 SDO3 6-57R-R10 6-57R-R10 6-57R Calibration
      Explorer - California M/T F67F-BA F6PZ-ND BAD0 SDO3 6-57R-R00 6-57R-R10 6-57R Calibration
      Explorer - California M/T F67F-BB F6PZ-ND BAD1 SDO3 6-57R-R05 6-57R-R10 6-57R Calibration
      Explorer - California M/T F67F-BC F6PZ-ND BAD2 SDO3 6-57R-R10 6-57R-R10 6-57R Calibration
      Explorer - California M/T F6PF-NA F6PZ-ND SDO0 SDO3 6-57R-R10 6-57R-R10 6-57R Calibration
      Explorer - California M/T F6PF-NB F6PZ-ND SDO1 SDO3 6-57R-R10 6-57R-R10 6-57R Calibration

      Explorer 49 State A/T F6PF-KB F6PZ-KC KDP1 KDP2 6-58B-R10 6-58B-R10 6-58B Calibration
      Explorer 49 State A/T F67F-DA F6PZ-KC MKK0 KDP2 6-58B-R00 6-58B-R10 6-58B Calibration
      Explorer 49 State A/T F6PF-KA F6PZ-KC KDP0 KDP2 6-58B-R10 6-58B-R10 6-58B Calibration
      Explorer 49 State A/T F67F-DC F6PZ-KC MKK1, MKK2 KDP2 6-58B-R10 6-58B-R10 6-58B Calibration

      Explorer - California A/T F6PF-LB F6PZ-LC LLA1 LLA2 6-58R-R10 6-58R-R10 6-58R Calibration
      Explorer - California A/T F67F-FA F6PZ-LC FAB0 LLA2 6-58R-R00 6-58R-R00 6-58R Calibration
      Explorer - California A/T F67F-FB F6PZ-LC FAB1 LLA2 6-58R-R05 6-58R-R10 6-58R Calibration
      Explorer - California A/T F67F-FC F6PZ-LC FAB2 LLA2 6-58R-R10 6-58R-R10 6-58R Calibration
      Explorer - California A/T F6PF-LA F6PZ-LC LLA0 LLA2 6-58R-R10 6-58R-R10 6-58R Calibration


      Obtain an Authorized Modifications Decal (FPS 8262 - obtainable through DOES II, 25/pkg) and list the date, dealer number, and summary of modifications performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.

      AUTHORIZED MODIFICATIONS

      THE FOLLOWING MODIFICATIONS HAVE BEEN MADE:
      Reprogrammed Powertrain Control Module (PCM) per TSB 00-26-4



      THESE MODIFICATIONS HAVE BEEN APPROVED, AS APPROPRIATE, BY EPA AND CARB.
      DEALER NUMBER:------------------------------------------DATE:

      CHANGE AUTHORITY:

      FPS 8262 9/78 FORD MOTOR COMPANY PRINTED IN U.S.A.





      OTHER APPLICABLE ARTICLES:
      NONE

      SUPERSEDES:
      00-23-4

      WARRANTY STATUS:
      Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage

      DEALER CODING
      BASIC PART NO. CONDITION CODE
      RECALEM 42

      OASIS CODES:
      698298


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

      Copyright © 2000 Ford Motor Company
       
    5. 91Bluestreak

      91Bluestreak New Member

      Joined:
      September 12, 2010
      Messages:
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      City, State:
      Byron Center
      Year, Model & Trim Level:
      96 2Dr Sport 4x4
      I'll have to look into that since I have to take it in for a recall anyways.
       

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