C3904

C3904 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3904 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 ICU reads the wiper switch position and sends the status of the switch to the BHM. This fault becomes active when the ICU reads that both LO speed and HI speed are active at the same time.

The BHM measures the current on this circuit when the headlamp output is commanded ON. This fault indicates that the left high beam headlamp circuit is drawing more current than it is designed to supply and possibly there is a wiring fault shorting this circuit to ground.

Ford C3904 Fault Code Meaning :

Ford C3904 Symptoms :

Ford C3904 Reasons :

How To Fix Ford C3904 Trouble Code ?

Which Ford cars have the code C3904?

  • C3904 Ford Aerostar
  • C3904 Ford Bronco
  • C3904 Ford C-Max
  • C3904 Ford C-Max Energi
  • C3904 Ford C-Max Hybrid
  • C3904 Ford Contour
  • C3904 Ford Crown Victoria
  • C3904 Ford EcoSport
  • C3904 Ford Econoline
  • C3904 Ford Edge
  • C3904 Ford Escape
  • C3904 Ford Escape Hybrid
  • C3904 Ford Escort
  • C3904 Ford Everest
  • C3904 Ford Excursion
  • C3904 Ford Expedition
  • C3904 Ford Explorer
  • C3904 Ford Explorer Sport Trac
  • C3904 Ford F-150
  • C3904 Ford F-250
  • C3904 Ford F-350
  • C3904 Ford Fiesta
  • C3904 Ford Flex
  • C3904 Ford Focus
  • C3904 Ford Focus Electric
  • C3904 Ford Freestar
  • C3904 Ford Freestyle
  • C3904 Ford Fusion
  • C3904 Ford Fusion Energi
  • C3904 Ford Fusion Hybrid
  • C3904 Ford Fusion Plug-In Hybrid
  • C3904 Ford GT
  • C3904 Ford Mustang
  • C3904 Ford Mustang Mach-E
  • C3904 Ford Mystique
  • C3904 Ford Probe
  • C3904 Ford Ranger
  • C3904 Ford Taurus
  • C3904 Ford Taurus X
  • C3904 Ford Tempo
  • C3904 Ford Thunderbird
  • C3904 Ford Transit
  • C3904 Ford Transit Connect
  • C3904 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.