P78E4

P78E4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P78E4 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 End of Frame air output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for an End of Frame air solenoid fault, and for an air pressure switch short circuit fault.

Ford P78E4 Fault Code Meaning :

Ford P78E4 Symptoms :

Ford P78E4 Reasons :

How To Fix Ford P78E4 Trouble Code ?

Which Ford cars have the code P78E4?

  • P78E4 Ford Aerostar
  • P78E4 Ford Bronco
  • P78E4 Ford C-Max
  • P78E4 Ford C-Max Energi
  • P78E4 Ford C-Max Hybrid
  • P78E4 Ford Contour
  • P78E4 Ford Crown Victoria
  • P78E4 Ford EcoSport
  • P78E4 Ford Econoline
  • P78E4 Ford Edge
  • P78E4 Ford Escape
  • P78E4 Ford Escape Hybrid
  • P78E4 Ford Escort
  • P78E4 Ford Everest
  • P78E4 Ford Excursion
  • P78E4 Ford Expedition
  • P78E4 Ford Explorer
  • P78E4 Ford Explorer Sport Trac
  • P78E4 Ford F-150
  • P78E4 Ford F-250
  • P78E4 Ford F-350
  • P78E4 Ford Fiesta
  • P78E4 Ford Flex
  • P78E4 Ford Focus
  • P78E4 Ford Focus Electric
  • P78E4 Ford Freestar
  • P78E4 Ford Freestyle
  • P78E4 Ford Fusion
  • P78E4 Ford Fusion Energi
  • P78E4 Ford Fusion Hybrid
  • P78E4 Ford Fusion Plug-In Hybrid
  • P78E4 Ford GT
  • P78E4 Ford Mustang
  • P78E4 Ford Mustang Mach-E
  • P78E4 Ford Mystique
  • P78E4 Ford Probe
  • P78E4 Ford Ranger
  • P78E4 Ford Taurus
  • P78E4 Ford Taurus X
  • P78E4 Ford Tempo
  • P78E4 Ford Thunderbird
  • P78E4 Ford Transit
  • P78E4 Ford Transit Connect
  • P78E4 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.