P3903

P3903 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3903 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 P3903 Fault Code Meaning :

Ford P3903 Symptoms :

Ford P3903 Reasons :

How To Fix Ford P3903 Trouble Code ?

Which Ford cars have the code P3903?

  • P3903 Ford Aerostar
  • P3903 Ford Bronco
  • P3903 Ford C-Max
  • P3903 Ford C-Max Energi
  • P3903 Ford C-Max Hybrid
  • P3903 Ford Contour
  • P3903 Ford Crown Victoria
  • P3903 Ford EcoSport
  • P3903 Ford Econoline
  • P3903 Ford Edge
  • P3903 Ford Escape
  • P3903 Ford Escape Hybrid
  • P3903 Ford Escort
  • P3903 Ford Everest
  • P3903 Ford Excursion
  • P3903 Ford Expedition
  • P3903 Ford Explorer
  • P3903 Ford Explorer Sport Trac
  • P3903 Ford F-150
  • P3903 Ford F-250
  • P3903 Ford F-350
  • P3903 Ford Fiesta
  • P3903 Ford Flex
  • P3903 Ford Focus
  • P3903 Ford Focus Electric
  • P3903 Ford Freestar
  • P3903 Ford Freestyle
  • P3903 Ford Fusion
  • P3903 Ford Fusion Energi
  • P3903 Ford Fusion Hybrid
  • P3903 Ford Fusion Plug-In Hybrid
  • P3903 Ford GT
  • P3903 Ford Mustang
  • P3903 Ford Mustang Mach-E
  • P3903 Ford Mystique
  • P3903 Ford Probe
  • P3903 Ford Ranger
  • P3903 Ford Taurus
  • P3903 Ford Taurus X
  • P3903 Ford Tempo
  • P3903 Ford Thunderbird
  • P3903 Ford Transit
  • P3903 Ford Transit Connect
  • P3903 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.