P78F1

P78F1 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P78F1 Diagnosis

The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 2 air solenoid fault, and for air pressure switch short circuit fault.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford P78F1 Fault Code Meaning :

Ford P78F1 Symptoms :

Ford P78F1 Reasons :

How To Fix Ford P78F1 Trouble Code ?

Which Ford cars have the code P78F1?

  • P78F1 Ford Aerostar
  • P78F1 Ford Bronco
  • P78F1 Ford C-Max
  • P78F1 Ford C-Max Energi
  • P78F1 Ford C-Max Hybrid
  • P78F1 Ford Contour
  • P78F1 Ford Crown Victoria
  • P78F1 Ford EcoSport
  • P78F1 Ford Econoline
  • P78F1 Ford Edge
  • P78F1 Ford Escape
  • P78F1 Ford Escape Hybrid
  • P78F1 Ford Escort
  • P78F1 Ford Everest
  • P78F1 Ford Excursion
  • P78F1 Ford Expedition
  • P78F1 Ford Explorer
  • P78F1 Ford Explorer Sport Trac
  • P78F1 Ford F-150
  • P78F1 Ford F-250
  • P78F1 Ford F-350
  • P78F1 Ford Fiesta
  • P78F1 Ford Flex
  • P78F1 Ford Focus
  • P78F1 Ford Focus Electric
  • P78F1 Ford Freestar
  • P78F1 Ford Freestyle
  • P78F1 Ford Fusion
  • P78F1 Ford Fusion Energi
  • P78F1 Ford Fusion Hybrid
  • P78F1 Ford Fusion Plug-In Hybrid
  • P78F1 Ford GT
  • P78F1 Ford Mustang
  • P78F1 Ford Mustang Mach-E
  • P78F1 Ford Mystique
  • P78F1 Ford Probe
  • P78F1 Ford Ranger
  • P78F1 Ford Taurus
  • P78F1 Ford Taurus X
  • P78F1 Ford Tempo
  • P78F1 Ford Thunderbird
  • P78F1 Ford Transit
  • P78F1 Ford Transit Connect
  • P78F1 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.