C0478

C0478 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C0478 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 C0478 Fault Code Meaning :

Ford C0478 Symptoms :

Ford C0478 Reasons :

How To Fix Ford C0478 Trouble Code ?

Which Ford cars have the code C0478?

  • C0478 Ford Aerostar
  • C0478 Ford Bronco
  • C0478 Ford C-Max
  • C0478 Ford C-Max Energi
  • C0478 Ford C-Max Hybrid
  • C0478 Ford Contour
  • C0478 Ford Crown Victoria
  • C0478 Ford EcoSport
  • C0478 Ford Econoline
  • C0478 Ford Edge
  • C0478 Ford Escape
  • C0478 Ford Escape Hybrid
  • C0478 Ford Escort
  • C0478 Ford Everest
  • C0478 Ford Excursion
  • C0478 Ford Expedition
  • C0478 Ford Explorer
  • C0478 Ford Explorer Sport Trac
  • C0478 Ford F-150
  • C0478 Ford F-250
  • C0478 Ford F-350
  • C0478 Ford Fiesta
  • C0478 Ford Flex
  • C0478 Ford Focus
  • C0478 Ford Focus Electric
  • C0478 Ford Freestar
  • C0478 Ford Freestyle
  • C0478 Ford Fusion
  • C0478 Ford Fusion Energi
  • C0478 Ford Fusion Hybrid
  • C0478 Ford Fusion Plug-In Hybrid
  • C0478 Ford GT
  • C0478 Ford Mustang
  • C0478 Ford Mustang Mach-E
  • C0478 Ford Mystique
  • C0478 Ford Probe
  • C0478 Ford Ranger
  • C0478 Ford Taurus
  • C0478 Ford Taurus X
  • C0478 Ford Tempo
  • C0478 Ford Thunderbird
  • C0478 Ford Transit
  • C0478 Ford Transit Connect
  • C0478 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.