P91A3

P91A3 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P91A3 Diagnosis

The CHM does not suupport PWM type DRLs. The vehicle has a BHM mismatch with the CHM. Replace the CHM with one that is compatible with the BHM.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 P91A3 Fault Code Meaning :

Ford P91A3 Symptoms :

Ford P91A3 Reasons :

How To Fix Ford P91A3 Trouble Code ?

Which Ford cars have the code P91A3?

  • P91A3 Ford Aerostar
  • P91A3 Ford Bronco
  • P91A3 Ford C-Max
  • P91A3 Ford C-Max Energi
  • P91A3 Ford C-Max Hybrid
  • P91A3 Ford Contour
  • P91A3 Ford Crown Victoria
  • P91A3 Ford EcoSport
  • P91A3 Ford Econoline
  • P91A3 Ford Edge
  • P91A3 Ford Escape
  • P91A3 Ford Escape Hybrid
  • P91A3 Ford Escort
  • P91A3 Ford Everest
  • P91A3 Ford Excursion
  • P91A3 Ford Expedition
  • P91A3 Ford Explorer
  • P91A3 Ford Explorer Sport Trac
  • P91A3 Ford F-150
  • P91A3 Ford F-250
  • P91A3 Ford F-350
  • P91A3 Ford Fiesta
  • P91A3 Ford Flex
  • P91A3 Ford Focus
  • P91A3 Ford Focus Electric
  • P91A3 Ford Freestar
  • P91A3 Ford Freestyle
  • P91A3 Ford Fusion
  • P91A3 Ford Fusion Energi
  • P91A3 Ford Fusion Hybrid
  • P91A3 Ford Fusion Plug-In Hybrid
  • P91A3 Ford GT
  • P91A3 Ford Mustang
  • P91A3 Ford Mustang Mach-E
  • P91A3 Ford Mystique
  • P91A3 Ford Probe
  • P91A3 Ford Ranger
  • P91A3 Ford Taurus
  • P91A3 Ford Taurus X
  • P91A3 Ford Tempo
  • P91A3 Ford Thunderbird
  • P91A3 Ford Transit
  • P91A3 Ford Transit Connect
  • P91A3 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.