P0378

P0378 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P0378 Diagnosis

The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open circuit fault.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 P0378 Fault Code Meaning :

Ford P0378 Symptoms :

Ford P0378 Reasons :

How To Fix Ford P0378 Trouble Code ?

Which Ford cars have the code P0378?

  • P0378 Ford Aerostar
  • P0378 Ford Bronco
  • P0378 Ford C-Max
  • P0378 Ford C-Max Energi
  • P0378 Ford C-Max Hybrid
  • P0378 Ford Contour
  • P0378 Ford Crown Victoria
  • P0378 Ford EcoSport
  • P0378 Ford Econoline
  • P0378 Ford Edge
  • P0378 Ford Escape
  • P0378 Ford Escape Hybrid
  • P0378 Ford Escort
  • P0378 Ford Everest
  • P0378 Ford Excursion
  • P0378 Ford Expedition
  • P0378 Ford Explorer
  • P0378 Ford Explorer Sport Trac
  • P0378 Ford F-150
  • P0378 Ford F-250
  • P0378 Ford F-350
  • P0378 Ford Fiesta
  • P0378 Ford Flex
  • P0378 Ford Focus
  • P0378 Ford Focus Electric
  • P0378 Ford Freestar
  • P0378 Ford Freestyle
  • P0378 Ford Fusion
  • P0378 Ford Fusion Energi
  • P0378 Ford Fusion Hybrid
  • P0378 Ford Fusion Plug-In Hybrid
  • P0378 Ford GT
  • P0378 Ford Mustang
  • P0378 Ford Mustang Mach-E
  • P0378 Ford Mystique
  • P0378 Ford Probe
  • P0378 Ford Ranger
  • P0378 Ford Taurus
  • P0378 Ford Taurus X
  • P0378 Ford Tempo
  • P0378 Ford Thunderbird
  • P0378 Ford Transit
  • P0378 Ford Transit Connect
  • P0378 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.