P1A78

P1A78 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P1A78 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.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 P1A78 Fault Code Meaning :

Ford P1A78 Symptoms :

Ford P1A78 Reasons :

How To Fix Ford P1A78 Trouble Code ?

Which Ford cars have the code P1A78?

  • P1A78 Ford Aerostar
  • P1A78 Ford Bronco
  • P1A78 Ford C-Max
  • P1A78 Ford C-Max Energi
  • P1A78 Ford C-Max Hybrid
  • P1A78 Ford Contour
  • P1A78 Ford Crown Victoria
  • P1A78 Ford EcoSport
  • P1A78 Ford Econoline
  • P1A78 Ford Edge
  • P1A78 Ford Escape
  • P1A78 Ford Escape Hybrid
  • P1A78 Ford Escort
  • P1A78 Ford Everest
  • P1A78 Ford Excursion
  • P1A78 Ford Expedition
  • P1A78 Ford Explorer
  • P1A78 Ford Explorer Sport Trac
  • P1A78 Ford F-150
  • P1A78 Ford F-250
  • P1A78 Ford F-350
  • P1A78 Ford Fiesta
  • P1A78 Ford Flex
  • P1A78 Ford Focus
  • P1A78 Ford Focus Electric
  • P1A78 Ford Freestar
  • P1A78 Ford Freestyle
  • P1A78 Ford Fusion
  • P1A78 Ford Fusion Energi
  • P1A78 Ford Fusion Hybrid
  • P1A78 Ford Fusion Plug-In Hybrid
  • P1A78 Ford GT
  • P1A78 Ford Mustang
  • P1A78 Ford Mustang Mach-E
  • P1A78 Ford Mystique
  • P1A78 Ford Probe
  • P1A78 Ford Ranger
  • P1A78 Ford Taurus
  • P1A78 Ford Taurus X
  • P1A78 Ford Tempo
  • P1A78 Ford Thunderbird
  • P1A78 Ford Transit
  • P1A78 Ford Transit Connect
  • P1A78 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.