U3901

U3901 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3901 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 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 U3901 Fault Code Meaning :

Ford U3901 Symptoms :

Ford U3901 Reasons :

How To Fix Ford U3901 Trouble Code ?

Which Ford cars have the code U3901?

  • U3901 Ford Aerostar
  • U3901 Ford Bronco
  • U3901 Ford C-Max
  • U3901 Ford C-Max Energi
  • U3901 Ford C-Max Hybrid
  • U3901 Ford Contour
  • U3901 Ford Crown Victoria
  • U3901 Ford EcoSport
  • U3901 Ford Econoline
  • U3901 Ford Edge
  • U3901 Ford Escape
  • U3901 Ford Escape Hybrid
  • U3901 Ford Escort
  • U3901 Ford Everest
  • U3901 Ford Excursion
  • U3901 Ford Expedition
  • U3901 Ford Explorer
  • U3901 Ford Explorer Sport Trac
  • U3901 Ford F-150
  • U3901 Ford F-250
  • U3901 Ford F-350
  • U3901 Ford Fiesta
  • U3901 Ford Flex
  • U3901 Ford Focus
  • U3901 Ford Focus Electric
  • U3901 Ford Freestar
  • U3901 Ford Freestyle
  • U3901 Ford Fusion
  • U3901 Ford Fusion Energi
  • U3901 Ford Fusion Hybrid
  • U3901 Ford Fusion Plug-In Hybrid
  • U3901 Ford GT
  • U3901 Ford Mustang
  • U3901 Ford Mustang Mach-E
  • U3901 Ford Mystique
  • U3901 Ford Probe
  • U3901 Ford Ranger
  • U3901 Ford Taurus
  • U3901 Ford Taurus X
  • U3901 Ford Tempo
  • U3901 Ford Thunderbird
  • U3901 Ford Transit
  • U3901 Ford Transit Connect
  • U3901 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.