P0A21

P0A21 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P0A21 Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.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 P0A21 Fault Code Meaning :

Ford P0A21 Symptoms :

Ford P0A21 Reasons :

How To Fix Ford P0A21 Trouble Code ?

Which Ford cars have the code P0A21?

  • P0A21 Ford Aerostar
  • P0A21 Ford Bronco
  • P0A21 Ford C-Max
  • P0A21 Ford C-Max Energi
  • P0A21 Ford C-Max Hybrid
  • P0A21 Ford Contour
  • P0A21 Ford Crown Victoria
  • P0A21 Ford EcoSport
  • P0A21 Ford Econoline
  • P0A21 Ford Edge
  • P0A21 Ford Escape
  • P0A21 Ford Escape Hybrid
  • P0A21 Ford Escort
  • P0A21 Ford Everest
  • P0A21 Ford Excursion
  • P0A21 Ford Expedition
  • P0A21 Ford Explorer
  • P0A21 Ford Explorer Sport Trac
  • P0A21 Ford F-150
  • P0A21 Ford F-250
  • P0A21 Ford F-350
  • P0A21 Ford Fiesta
  • P0A21 Ford Flex
  • P0A21 Ford Focus
  • P0A21 Ford Focus Electric
  • P0A21 Ford Freestar
  • P0A21 Ford Freestyle
  • P0A21 Ford Fusion
  • P0A21 Ford Fusion Energi
  • P0A21 Ford Fusion Hybrid
  • P0A21 Ford Fusion Plug-In Hybrid
  • P0A21 Ford GT
  • P0A21 Ford Mustang
  • P0A21 Ford Mustang Mach-E
  • P0A21 Ford Mystique
  • P0A21 Ford Probe
  • P0A21 Ford Ranger
  • P0A21 Ford Taurus
  • P0A21 Ford Taurus X
  • P0A21 Ford Tempo
  • P0A21 Ford Thunderbird
  • P0A21 Ford Transit
  • P0A21 Ford Transit Connect
  • P0A21 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.