P78F9

P78F9 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P78F9 Diagnosis

The axle lift 2 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for axle lift 2 air solenoid fault, and for air pressure switch short circuit fault.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 P78F9 Fault Code Meaning :

Ford P78F9 Symptoms :

Ford P78F9 Reasons :

How To Fix Ford P78F9 Trouble Code ?

Which Ford cars have the code P78F9?

  • P78F9 Ford Aerostar
  • P78F9 Ford Bronco
  • P78F9 Ford C-Max
  • P78F9 Ford C-Max Energi
  • P78F9 Ford C-Max Hybrid
  • P78F9 Ford Contour
  • P78F9 Ford Crown Victoria
  • P78F9 Ford EcoSport
  • P78F9 Ford Econoline
  • P78F9 Ford Edge
  • P78F9 Ford Escape
  • P78F9 Ford Escape Hybrid
  • P78F9 Ford Escort
  • P78F9 Ford Everest
  • P78F9 Ford Excursion
  • P78F9 Ford Expedition
  • P78F9 Ford Explorer
  • P78F9 Ford Explorer Sport Trac
  • P78F9 Ford F-150
  • P78F9 Ford F-250
  • P78F9 Ford F-350
  • P78F9 Ford Fiesta
  • P78F9 Ford Flex
  • P78F9 Ford Focus
  • P78F9 Ford Focus Electric
  • P78F9 Ford Freestar
  • P78F9 Ford Freestyle
  • P78F9 Ford Fusion
  • P78F9 Ford Fusion Energi
  • P78F9 Ford Fusion Hybrid
  • P78F9 Ford Fusion Plug-In Hybrid
  • P78F9 Ford GT
  • P78F9 Ford Mustang
  • P78F9 Ford Mustang Mach-E
  • P78F9 Ford Mystique
  • P78F9 Ford Probe
  • P78F9 Ford Ranger
  • P78F9 Ford Taurus
  • P78F9 Ford Taurus X
  • P78F9 Ford Tempo
  • P78F9 Ford Thunderbird
  • P78F9 Ford Transit
  • P78F9 Ford Transit Connect
  • P78F9 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.