P77C4

P77C4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P77C4 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 P77C4 Fault Code Meaning :

Ford P77C4 Symptoms :

Ford P77C4 Reasons :

How To Fix Ford P77C4 Trouble Code ?

Which Ford cars have the code P77C4?

  • P77C4 Ford Aerostar
  • P77C4 Ford Bronco
  • P77C4 Ford C-Max
  • P77C4 Ford C-Max Energi
  • P77C4 Ford C-Max Hybrid
  • P77C4 Ford Contour
  • P77C4 Ford Crown Victoria
  • P77C4 Ford EcoSport
  • P77C4 Ford Econoline
  • P77C4 Ford Edge
  • P77C4 Ford Escape
  • P77C4 Ford Escape Hybrid
  • P77C4 Ford Escort
  • P77C4 Ford Everest
  • P77C4 Ford Excursion
  • P77C4 Ford Expedition
  • P77C4 Ford Explorer
  • P77C4 Ford Explorer Sport Trac
  • P77C4 Ford F-150
  • P77C4 Ford F-250
  • P77C4 Ford F-350
  • P77C4 Ford Fiesta
  • P77C4 Ford Flex
  • P77C4 Ford Focus
  • P77C4 Ford Focus Electric
  • P77C4 Ford Freestar
  • P77C4 Ford Freestyle
  • P77C4 Ford Fusion
  • P77C4 Ford Fusion Energi
  • P77C4 Ford Fusion Hybrid
  • P77C4 Ford Fusion Plug-In Hybrid
  • P77C4 Ford GT
  • P77C4 Ford Mustang
  • P77C4 Ford Mustang Mach-E
  • P77C4 Ford Mystique
  • P77C4 Ford Probe
  • P77C4 Ford Ranger
  • P77C4 Ford Taurus
  • P77C4 Ford Taurus X
  • P77C4 Ford Tempo
  • P77C4 Ford Thunderbird
  • P77C4 Ford Transit
  • P77C4 Ford Transit Connect
  • P77C4 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.