C3391

C3391 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3391 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 BHM drives the 5 cab overhead clearance and ID lamps from connector B5 pin C on circuit 46. All other marker and tail lamps are driven from BHM connector B1,K on circuit 23. This circuit connects to the CHM as an input at connector J3,P.

Ford C3391 Fault Code Meaning :

Ford C3391 Symptoms :

Ford C3391 Reasons :

How To Fix Ford C3391 Trouble Code ?

Which Ford cars have the code C3391?

  • C3391 Ford Aerostar
  • C3391 Ford Bronco
  • C3391 Ford C-Max
  • C3391 Ford C-Max Energi
  • C3391 Ford C-Max Hybrid
  • C3391 Ford Contour
  • C3391 Ford Crown Victoria
  • C3391 Ford EcoSport
  • C3391 Ford Econoline
  • C3391 Ford Edge
  • C3391 Ford Escape
  • C3391 Ford Escape Hybrid
  • C3391 Ford Escort
  • C3391 Ford Everest
  • C3391 Ford Excursion
  • C3391 Ford Expedition
  • C3391 Ford Explorer
  • C3391 Ford Explorer Sport Trac
  • C3391 Ford F-150
  • C3391 Ford F-250
  • C3391 Ford F-350
  • C3391 Ford Fiesta
  • C3391 Ford Flex
  • C3391 Ford Focus
  • C3391 Ford Focus Electric
  • C3391 Ford Freestar
  • C3391 Ford Freestyle
  • C3391 Ford Fusion
  • C3391 Ford Fusion Energi
  • C3391 Ford Fusion Hybrid
  • C3391 Ford Fusion Plug-In Hybrid
  • C3391 Ford GT
  • C3391 Ford Mustang
  • C3391 Ford Mustang Mach-E
  • C3391 Ford Mystique
  • C3391 Ford Probe
  • C3391 Ford Ranger
  • C3391 Ford Taurus
  • C3391 Ford Taurus X
  • C3391 Ford Tempo
  • C3391 Ford Thunderbird
  • C3391 Ford Transit
  • C3391 Ford Transit Connect
  • C3391 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.