P31B4

P31B4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P31B4 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 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 P31B4 Fault Code Meaning :

Ford P31B4 Symptoms :

Ford P31B4 Reasons :

How To Fix Ford P31B4 Trouble Code ?

Which Ford cars have the code P31B4?

  • P31B4 Ford Aerostar
  • P31B4 Ford Bronco
  • P31B4 Ford C-Max
  • P31B4 Ford C-Max Energi
  • P31B4 Ford C-Max Hybrid
  • P31B4 Ford Contour
  • P31B4 Ford Crown Victoria
  • P31B4 Ford EcoSport
  • P31B4 Ford Econoline
  • P31B4 Ford Edge
  • P31B4 Ford Escape
  • P31B4 Ford Escape Hybrid
  • P31B4 Ford Escort
  • P31B4 Ford Everest
  • P31B4 Ford Excursion
  • P31B4 Ford Expedition
  • P31B4 Ford Explorer
  • P31B4 Ford Explorer Sport Trac
  • P31B4 Ford F-150
  • P31B4 Ford F-250
  • P31B4 Ford F-350
  • P31B4 Ford Fiesta
  • P31B4 Ford Flex
  • P31B4 Ford Focus
  • P31B4 Ford Focus Electric
  • P31B4 Ford Freestar
  • P31B4 Ford Freestyle
  • P31B4 Ford Fusion
  • P31B4 Ford Fusion Energi
  • P31B4 Ford Fusion Hybrid
  • P31B4 Ford Fusion Plug-In Hybrid
  • P31B4 Ford GT
  • P31B4 Ford Mustang
  • P31B4 Ford Mustang Mach-E
  • P31B4 Ford Mystique
  • P31B4 Ford Probe
  • P31B4 Ford Ranger
  • P31B4 Ford Taurus
  • P31B4 Ford Taurus X
  • P31B4 Ford Tempo
  • P31B4 Ford Thunderbird
  • P31B4 Ford Transit
  • P31B4 Ford Transit Connect
  • P31B4 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.