U3278

U3278 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3278 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 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 U3278 Fault Code Meaning :

Ford U3278 Symptoms :

Ford U3278 Reasons :

How To Fix Ford U3278 Trouble Code ?

Which Ford cars have the code U3278?

  • U3278 Ford Aerostar
  • U3278 Ford Bronco
  • U3278 Ford C-Max
  • U3278 Ford C-Max Energi
  • U3278 Ford C-Max Hybrid
  • U3278 Ford Contour
  • U3278 Ford Crown Victoria
  • U3278 Ford EcoSport
  • U3278 Ford Econoline
  • U3278 Ford Edge
  • U3278 Ford Escape
  • U3278 Ford Escape Hybrid
  • U3278 Ford Escort
  • U3278 Ford Everest
  • U3278 Ford Excursion
  • U3278 Ford Expedition
  • U3278 Ford Explorer
  • U3278 Ford Explorer Sport Trac
  • U3278 Ford F-150
  • U3278 Ford F-250
  • U3278 Ford F-350
  • U3278 Ford Fiesta
  • U3278 Ford Flex
  • U3278 Ford Focus
  • U3278 Ford Focus Electric
  • U3278 Ford Freestar
  • U3278 Ford Freestyle
  • U3278 Ford Fusion
  • U3278 Ford Fusion Energi
  • U3278 Ford Fusion Hybrid
  • U3278 Ford Fusion Plug-In Hybrid
  • U3278 Ford GT
  • U3278 Ford Mustang
  • U3278 Ford Mustang Mach-E
  • U3278 Ford Mystique
  • U3278 Ford Probe
  • U3278 Ford Ranger
  • U3278 Ford Taurus
  • U3278 Ford Taurus X
  • U3278 Ford Tempo
  • U3278 Ford Thunderbird
  • U3278 Ford Transit
  • U3278 Ford Transit Connect
  • U3278 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.