P78A8

P78A8 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P78A8 Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.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 P78A8 Fault Code Meaning :

Ford P78A8 Symptoms :

Ford P78A8 Reasons :

How To Fix Ford P78A8 Trouble Code ?

Which Ford cars have the code P78A8?

  • P78A8 Ford Aerostar
  • P78A8 Ford Bronco
  • P78A8 Ford C-Max
  • P78A8 Ford C-Max Energi
  • P78A8 Ford C-Max Hybrid
  • P78A8 Ford Contour
  • P78A8 Ford Crown Victoria
  • P78A8 Ford EcoSport
  • P78A8 Ford Econoline
  • P78A8 Ford Edge
  • P78A8 Ford Escape
  • P78A8 Ford Escape Hybrid
  • P78A8 Ford Escort
  • P78A8 Ford Everest
  • P78A8 Ford Excursion
  • P78A8 Ford Expedition
  • P78A8 Ford Explorer
  • P78A8 Ford Explorer Sport Trac
  • P78A8 Ford F-150
  • P78A8 Ford F-250
  • P78A8 Ford F-350
  • P78A8 Ford Fiesta
  • P78A8 Ford Flex
  • P78A8 Ford Focus
  • P78A8 Ford Focus Electric
  • P78A8 Ford Freestar
  • P78A8 Ford Freestyle
  • P78A8 Ford Fusion
  • P78A8 Ford Fusion Energi
  • P78A8 Ford Fusion Hybrid
  • P78A8 Ford Fusion Plug-In Hybrid
  • P78A8 Ford GT
  • P78A8 Ford Mustang
  • P78A8 Ford Mustang Mach-E
  • P78A8 Ford Mystique
  • P78A8 Ford Probe
  • P78A8 Ford Ranger
  • P78A8 Ford Taurus
  • P78A8 Ford Taurus X
  • P78A8 Ford Tempo
  • P78A8 Ford Thunderbird
  • P78A8 Ford Transit
  • P78A8 Ford Transit Connect
  • P78A8 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.