P31A3

P31A3 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P31A3 Diagnosis

The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open circuit fault.Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

This circuit connects to the CHM as an input at connector J3,P. The CHM passes the signal through to power the tail lamps and marker lamps from connector C2 pin G and also from connector C1 pins D, E, and F.

Ford P31A3 Fault Code Meaning :

Ford P31A3 Symptoms :

Ford P31A3 Reasons :

How To Fix Ford P31A3 Trouble Code ?

Which Ford cars have the code P31A3?

  • P31A3 Ford Aerostar
  • P31A3 Ford Bronco
  • P31A3 Ford C-Max
  • P31A3 Ford C-Max Energi
  • P31A3 Ford C-Max Hybrid
  • P31A3 Ford Contour
  • P31A3 Ford Crown Victoria
  • P31A3 Ford EcoSport
  • P31A3 Ford Econoline
  • P31A3 Ford Edge
  • P31A3 Ford Escape
  • P31A3 Ford Escape Hybrid
  • P31A3 Ford Escort
  • P31A3 Ford Everest
  • P31A3 Ford Excursion
  • P31A3 Ford Expedition
  • P31A3 Ford Explorer
  • P31A3 Ford Explorer Sport Trac
  • P31A3 Ford F-150
  • P31A3 Ford F-250
  • P31A3 Ford F-350
  • P31A3 Ford Fiesta
  • P31A3 Ford Flex
  • P31A3 Ford Focus
  • P31A3 Ford Focus Electric
  • P31A3 Ford Freestar
  • P31A3 Ford Freestyle
  • P31A3 Ford Fusion
  • P31A3 Ford Fusion Energi
  • P31A3 Ford Fusion Hybrid
  • P31A3 Ford Fusion Plug-In Hybrid
  • P31A3 Ford GT
  • P31A3 Ford Mustang
  • P31A3 Ford Mustang Mach-E
  • P31A3 Ford Mystique
  • P31A3 Ford Probe
  • P31A3 Ford Ranger
  • P31A3 Ford Taurus
  • P31A3 Ford Taurus X
  • P31A3 Ford Tempo
  • P31A3 Ford Thunderbird
  • P31A3 Ford Transit
  • P31A3 Ford Transit Connect
  • P31A3 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.