P31A9

P31A9 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P31A9 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 is detecting more than one smart switch with the same ID number present on the vehicle. The outputs controlled by the switch and the indicator in the switch are commanded FF.

The End of Frame air output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for an End of Frame air solenoid fault, and for an air pressure switch short circuit fault.

Ford P31A9 Fault Code Meaning :

Ford P31A9 Symptoms :

Ford P31A9 Reasons :

How To Fix Ford P31A9 Trouble Code ?

Which Ford cars have the code P31A9?

  • P31A9 Ford Aerostar
  • P31A9 Ford Bronco
  • P31A9 Ford C-Max
  • P31A9 Ford C-Max Energi
  • P31A9 Ford C-Max Hybrid
  • P31A9 Ford Contour
  • P31A9 Ford Crown Victoria
  • P31A9 Ford EcoSport
  • P31A9 Ford Econoline
  • P31A9 Ford Edge
  • P31A9 Ford Escape
  • P31A9 Ford Escape Hybrid
  • P31A9 Ford Escort
  • P31A9 Ford Everest
  • P31A9 Ford Excursion
  • P31A9 Ford Expedition
  • P31A9 Ford Explorer
  • P31A9 Ford Explorer Sport Trac
  • P31A9 Ford F-150
  • P31A9 Ford F-250
  • P31A9 Ford F-350
  • P31A9 Ford Fiesta
  • P31A9 Ford Flex
  • P31A9 Ford Focus
  • P31A9 Ford Focus Electric
  • P31A9 Ford Freestar
  • P31A9 Ford Freestyle
  • P31A9 Ford Fusion
  • P31A9 Ford Fusion Energi
  • P31A9 Ford Fusion Hybrid
  • P31A9 Ford Fusion Plug-In Hybrid
  • P31A9 Ford GT
  • P31A9 Ford Mustang
  • P31A9 Ford Mustang Mach-E
  • P31A9 Ford Mystique
  • P31A9 Ford Probe
  • P31A9 Ford Ranger
  • P31A9 Ford Taurus
  • P31A9 Ford Taurus X
  • P31A9 Ford Tempo
  • P31A9 Ford Thunderbird
  • P31A9 Ford Transit
  • P31A9 Ford Transit Connect
  • P31A9 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.