P78D4
P78D4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.P78D4 Diagnosis
The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.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 P78D4 Fault Code Meaning :
Ford P78D4 Symptoms :
Ford P78D4 Reasons :
How To Fix Ford P78D4 Trouble Code ?
Which Ford cars have the code P78D4?
- P78D4 Ford Aerostar
- P78D4 Ford Bronco
- P78D4 Ford C-Max
- P78D4 Ford C-Max Energi
- P78D4 Ford C-Max Hybrid
- P78D4 Ford Contour
- P78D4 Ford Crown Victoria
- P78D4 Ford EcoSport
- P78D4 Ford Econoline
- P78D4 Ford Edge
- P78D4 Ford Escape
- P78D4 Ford Escape Hybrid
- P78D4 Ford Escort
- P78D4 Ford Everest
- P78D4 Ford Excursion
- P78D4 Ford Expedition
- P78D4 Ford Explorer
- P78D4 Ford Explorer Sport Trac
- P78D4 Ford F-150
- P78D4 Ford F-250
- P78D4 Ford F-350
- P78D4 Ford Fiesta
- P78D4 Ford Flex
- P78D4 Ford Focus
- P78D4 Ford Focus Electric
- P78D4 Ford Freestar
- P78D4 Ford Freestyle
- P78D4 Ford Fusion
- P78D4 Ford Fusion Energi
- P78D4 Ford Fusion Hybrid
- P78D4 Ford Fusion Plug-In Hybrid
- P78D4 Ford GT
- P78D4 Ford Mustang
- P78D4 Ford Mustang Mach-E
- P78D4 Ford Mystique
- P78D4 Ford Probe
- P78D4 Ford Ranger
- P78D4 Ford Taurus
- P78D4 Ford Taurus X
- P78D4 Ford Tempo
- P78D4 Ford Thunderbird
- P78D4 Ford Transit
- P78D4 Ford Transit Connect
- P78D4 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.