P3801

P3801 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3801 Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford P3801 Fault Code Meaning :

Ford P3801 Symptoms :

Ford P3801 Reasons :

How To Fix Ford P3801 Trouble Code ?

Which Ford cars have the code P3801?

  • P3801 Ford Aerostar
  • P3801 Ford Bronco
  • P3801 Ford C-Max
  • P3801 Ford C-Max Energi
  • P3801 Ford C-Max Hybrid
  • P3801 Ford Contour
  • P3801 Ford Crown Victoria
  • P3801 Ford EcoSport
  • P3801 Ford Econoline
  • P3801 Ford Edge
  • P3801 Ford Escape
  • P3801 Ford Escape Hybrid
  • P3801 Ford Escort
  • P3801 Ford Everest
  • P3801 Ford Excursion
  • P3801 Ford Expedition
  • P3801 Ford Explorer
  • P3801 Ford Explorer Sport Trac
  • P3801 Ford F-150
  • P3801 Ford F-250
  • P3801 Ford F-350
  • P3801 Ford Fiesta
  • P3801 Ford Flex
  • P3801 Ford Focus
  • P3801 Ford Focus Electric
  • P3801 Ford Freestar
  • P3801 Ford Freestyle
  • P3801 Ford Fusion
  • P3801 Ford Fusion Energi
  • P3801 Ford Fusion Hybrid
  • P3801 Ford Fusion Plug-In Hybrid
  • P3801 Ford GT
  • P3801 Ford Mustang
  • P3801 Ford Mustang Mach-E
  • P3801 Ford Mystique
  • P3801 Ford Probe
  • P3801 Ford Ranger
  • P3801 Ford Taurus
  • P3801 Ford Taurus X
  • P3801 Ford Tempo
  • P3801 Ford Thunderbird
  • P3801 Ford Transit
  • P3801 Ford Transit Connect
  • P3801 Ford Windstar

A code is a fault code and it indicates that something has gone wrong with your car's engine.

It can be caused by many different problems, including a faulty battery, a bad fuel pump, or even a cracked exhaust manifold.

You will need to diagnose the problem before you can fix it. The best way to do this is with an OBD scanner tool.

A scan tool will tell you what needs fixing and how much it will cost in order to fix that particular issue.