P0078

P0078 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P0078 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.Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

The BHM measures the current on this circuit when the starter output is commanded ON. This fault indicates the magnetic switch or the wiring between the BHM and the magnetic switch is open circuit.

Ford P0078 Fault Code Meaning :

Ford P0078 Symptoms :

Ford P0078 Reasons :

How To Fix Ford P0078 Trouble Code ?

Which Ford cars have the code P0078?

  • P0078 Ford Aerostar
  • P0078 Ford Bronco
  • P0078 Ford C-Max
  • P0078 Ford C-Max Energi
  • P0078 Ford C-Max Hybrid
  • P0078 Ford Contour
  • P0078 Ford Crown Victoria
  • P0078 Ford EcoSport
  • P0078 Ford Econoline
  • P0078 Ford Edge
  • P0078 Ford Escape
  • P0078 Ford Escape Hybrid
  • P0078 Ford Escort
  • P0078 Ford Everest
  • P0078 Ford Excursion
  • P0078 Ford Expedition
  • P0078 Ford Explorer
  • P0078 Ford Explorer Sport Trac
  • P0078 Ford F-150
  • P0078 Ford F-250
  • P0078 Ford F-350
  • P0078 Ford Fiesta
  • P0078 Ford Flex
  • P0078 Ford Focus
  • P0078 Ford Focus Electric
  • P0078 Ford Freestar
  • P0078 Ford Freestyle
  • P0078 Ford Fusion
  • P0078 Ford Fusion Energi
  • P0078 Ford Fusion Hybrid
  • P0078 Ford Fusion Plug-In Hybrid
  • P0078 Ford GT
  • P0078 Ford Mustang
  • P0078 Ford Mustang Mach-E
  • P0078 Ford Mystique
  • P0078 Ford Probe
  • P0078 Ford Ranger
  • P0078 Ford Taurus
  • P0078 Ford Taurus X
  • P0078 Ford Tempo
  • P0078 Ford Thunderbird
  • P0078 Ford Transit
  • P0078 Ford Transit Connect
  • P0078 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.