2015 Ford Explorer 3.5 Ecoboost - Code P0087, P008A - Help!

[dave87e]

I just got this vehicle back from a water pump explosion and it flat out died and refused to start after driving fine for an hour and going in a store. I hooked up FORScan and got the following:

I am thinking its a Fuel Pressure sensor with the P0087, but I am not sure why its accompanied by the P008A, Any help would be appreciated.

Code: P0087 - Fuel Rail/System Pressure - Too Low (Bank 1)

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC
- Test not complete

Module: Powertrain Control Module

Freeze Frame #1:

Freeze Frame #2:
-EVENT_TIME: 206115457 s (Fri Sep 23 17:24:01 2022) - Event time
-TOTAL_DISTANCE: 111325 km - Total Distance
-FUELSYS: OL - Fault - Fuel System Status (Open/Closed Loop)
-LOAD: 86.27 % - Calculated Load Value
-ECT: 94 °C - Engine coolant temperature
-SHRTFT1: 0.00 % - Short term fuel trim 1
-LONGFT1: 2.34 % - Long term fuel trim 1
-SHRTFT2: 0.00 % - Short term fuel trim 2
-LONGFT2: 2.34 % - Long term fuel trim 2
-MAP: 90.0 kPa - Manifold absolute pressure sensor
-RPM: 603 1/min - Engine Revolutions Per Minute
-VSS: 0.0 km/h - Vehicle Speed
-SPARKADV: -3.50 ° - Spark Advance
-IAT: 50 °C - Intake Air Temperature
-RUNTM: 10 s - Time Since Engine Start
-EVAP_PCT: 0.00 % - Commanded Evaporative Purge
-FLI: 89.41 % - Fuel Level
-FTP_H20: 0 - Fuel Tank Pressure displayed as inches of water
-BARO: 99.0 kPa - Barometric pressure
-VPWR: 13.53 V - Control Module Voltage
-TP_REL: 7.45 % - Relative Throttle Position
-TAC_PCT: 12.16 % - Commanded Throttle Actuator Control
-RPMDSD: 850 1/min - Desired Idle Speed RPM
-O2S12: 0.35 V - Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 2)
-O2S22: 0.32 V - Heated Exhaust Gas Oxygen Sensor (bank 2, sensor 2)
-TQ_CNTRL: None Requested - Torque Control Requested
-APP_FLT: No Fault - Accelerator Pedal Position Sensor Status
-CHT_F: No Fault - Cylinder Head Temperature Sensor Status
-CHTIL: Off - Cylinder Head Temperature Indicator Lamp
-IAT_F: No Fault - Inlet Air Temperature Sensor Status
-ETC_TRIM_LRN: Yes - Throttle Angle Offset has Learned
-MISFIRE: No - Engine Misfire currently detected
-TP_F: No Fault - Throttle Position Sensor Status
-FF_LRND: No - Inferred Flex Fuel Learned
-MP_LRN: Yes - Misfire Profile Correction Learned
-MAF_F: No Fault - Mass Air Flow Sensor Status
-MAP_F: No Fault - Manifold Absolute Pressure Sensor Status
-OTS_STAT: Enabled - One-Touch Start Status
-PCVHC_F: No Fault - PCV Heater Control Status
-SMC_MON: Off - Starter Motor Control Output Detected
-STRT_RLY: Disabled - Starter Motor Relay Enable
-APP1: 0.76 V - Accelerator pedal position sensor 1
-APP2: 0.39 V - Accelerator pedal position sensor 2
-TP1: 4.04 V - Throttle Position Sensor 1
-TP2: 1.32 V - Throttle Position Sensor 2
-GEAR: 1 - Gear Commanded
-GEAR_OSC: 1 - Gear Command by Output State Control
-TSS_SRC: 775 1/min - Actual Turbine Shaft Speed
-OSS_SRC: 0 1/min - Actual Output Shaft Speed
-TFT: 91 °C - Transmission Fluid Temperature
-TR: Park - Transmission range

Code: P008A - Low Pressure Fuel System Pressure - Too Low

Status:
- DTC Maturing - Intermittent at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Powertrain Control Module

Freeze Frame #1:

Freeze Frame #2:
-EVENT_TIME: 206115460 s (Fri Sep 23 17:24:04 2022) - Event time
-TOTAL_DISTANCE: 111325 km - Total Distance
-FUELSYS: OL - Fault - Fuel System Status (Open/Closed Loop)
-LOAD: 96.47 % - Calculated Load Value
-ECT: 93 °C - Engine coolant temperature
-SHRTFT1: 0.00 % - Short term fuel trim 1
-LONGFT1: 3.13 % - Long term fuel trim 1
-SHRTFT2: 0.00 % - Short term fuel trim 2
-LONGFT2: 3.13 % - Long term fuel trim 2
-MAP: 96.0 kPa - Manifold absolute pressure sensor
-RPM: 540 1/min - Engine Revolutions Per Minute
-VSS: 0.0 km/h - Vehicle Speed
-SPARKADV: -5.50 ° - Spark Advance
-IAT: 49 °C - Intake Air Temperature
-RUNTM: 13 s - Time Since Engine Start
-EVAP_PCT: 0.00 % - Commanded Evaporative Purge
-FLI: 89.80 % - Fuel Level
-FTP_H20: 0 - Fuel Tank Pressure displayed as inches of water
-BARO: 99.0 kPa - Barometric pressure
-VPWR: 13.56 V - Control Module Voltage
-TP_REL: 10.20 % - Relative Throttle Position
-TAC_PCT: 14.12 % - Commanded Throttle Actuator Control
-RPMDSD: 850 1/min - Desired Idle Speed RPM
-O2S12: 0.32 V - Heated Exhaust Gas Oxygen Sensor (bank 1, sensor 2)
-O2S22: 0.29 V - Heated Exhaust Gas Oxygen Sensor (bank 2, sensor 2)
-TQ_CNTRL: None Requested - Torque Control Requested
-APP_FLT: No Fault - Accelerator Pedal Position Sensor Status
-CHT_F: No Fault - Cylinder Head Temperature Sensor Status
-CHTIL: Off - Cylinder Head Temperature Indicator Lamp
-IAT_F: No Fault - Inlet Air Temperature Sensor Status
-ETC_TRIM_LRN: Yes - Throttle Angle Offset has Learned
-MISFIRE: No - Engine Misfire currently detected
-TP_F: No Fault - Throttle Position Sensor Status
-FF_LRND: No - Inferred Flex Fuel Learned
-MP_LRN: Yes - Misfire Profile Correction Learned
-MAF_F: No Fault - Mass Air Flow Sensor Status
-MAP_F: No Fault - Manifold Absolute Pressure Sensor Status
-OTS_STAT: Enabled - One-Touch Start Status
-PCVHC_F: No Fault - PCV Heater Control Status
-SMC_MON: Off - Starter Motor Control Output Detected
-STRT_RLY: Disabled - Starter Motor Relay Enable
-APP1: 0.76 V - Accelerator pedal position sensor 1
-APP2: 0.39 V - Accelerator pedal position sensor 2
-TP1: 3.92 V - Throttle Position Sensor 1
-TP2: 1.55 V - Throttle Position Sensor 2
-GEAR: 1 - Gear Commanded
-GEAR_OSC: 1 - Gear Command by Output State Control
-TSS_SRC: 715 1/min - Actual Turbine Shaft Speed
-OSS_SRC: 0 1/min - Actual Output Shaft Speed
-TFT: 91 °C - Transmission Fluid Temperature
-TR: Park - Transmission range

 

[peterk9]

Welcome to the Forum Dave.
Were you able to get away with just the water pump replacement or was there engine damage? Did they also replace the timing chain and associated parts?

Peter

 

[mguy13sport]

Add the fuel rail pressure to your data logging. I didn't see the fuel pressure listed anywhere in there and the code indicates the low pressure pump isn't working basically. Even with the engine off and ignition on you should see at least 200 psi at the fuel rail.

The waterpump technically should be unrelated to the low pressure pump in the tank however the high pressure pump is located on the front cam cover and was removed to get at the waterpump.

It would just be bad luck if your low pressure pump died right after fixing the water pump.

 

[dave87e]

Welcome to the Forum Dave.
Were you able to get away with just the water pump replacement or was there engine damage? Did they also replace the timing chain and associated parts?

Peter

Thank you Peter, They ended up replacing a lot of gaskets, timing chain, and a bad tensioner pully as well.

 

[dave87e]

Add the fuel rail pressure to your data logging. I didn't see the fuel pressure listed anywhere in there and the code indicates the low pressure pump isn't working basically. Even with the engine off and ignition on you should see at least 200 psi at the fuel rail.

The waterpump technically should be unrelated to the low pressure pump in the tank however the high pressure pump is located on the front cam cover and was removed to get at the waterpump.

It would just be bad luck if your low pressure pump died right after fixing the water pump.

@mguy13sport should I bother replacing the low Pressure fuel system sensor? Or just take it to the dealer and have them replace the the low pressure pump?

 

[mguy13sport]

@mguy13sport should I bother replacing the low Pressure fuel system sensor? Or just take it to the dealer and have them replace the the low pressure pump?

I would see if you can get a fuel rail pressure reading in ForScan. Like I said it should have pressure even with the engine off. How many miles are on the car and how long did it sit while the work was being performed? There have been a few members on here who had to replace the low pressure pump and just like the waterpump it is labor intensive

 

[dave87e]

I would see if you can get a fuel rail pressure reading in ForScan. Like I said it should have pressure even with the engine off. How many miles are on the car and how long did it sit while the work was being performed? There have been a few members on here who had to replace the low pressure pump and just like the waterpump it is labor intensive

@mguy13sport, For whatever reason, I cant get FORScan to register the Fuel Rail Pressure (not sure why), I have deleted and re-added the profile several times to no avail. I think I am going to try to replace the sensor and see if that does the trick, if not I guess the dealer will be putting in a new Low Pressure pump for me. My vehicle is at 69,000 miles and it only sat for a week while they replaced the water pump. I may end up fixing this piece and just selling it, I have only had the vehicle for a few months and already had to replace the oil Pressure sensor, Door AC actuator, water pump (cool 3k) and will probably end up replacing the low Pressure fuel pump. Do these things just fall apart at 70K?

 

[dave87e]

I would see if you can get a fuel rail pressure reading in ForScan. Like I said it should have pressure even with the engine off. How many miles are on the car and how long did it sit while the work was being performed? There have been a few members on here who had to replace the low pressure pump and just like the waterpump it is labor intensive

@mguy13sport finally got some readings using the app instead of the windows program. Anything jump out at you?

 

[mguy13sport]

Is that with the engine off? Its reading about 30 psi which is low. Surprisingly it says no fault.

Does the reading change with the ignition on / engine on? If it doesn't start, does the pressure go up as it cranks?

 

[dave87e]

Is that with the engine off? Its reading about 30 psi which is low. Surprisingly it says no fault.

Does the reading change with the ignition on / engine on? If it doesn't start, does the pressure go up as it cranks?

@mguy13sport That was with the engine turned off, haven't gotten it to start since early this morning, and now that its cooled off outside it finally started up again. Here is with it running:

 

[mguy13sport]

Everything looks fine there. I would data log the pressure when you're driving around. Under load / medium throttle should see around 1500 psi. I see over 2000 psi at full throttle on my car. Also measure the pressure when the car is off. It should hold pressure and drop slowly.

I would also data log the pump voltage while driving too just to see if any thing funky is happening to it.