P1391

P1391 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P1391 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 P1391 Fault Code Meaning :

Ford P1391 Symptoms :

Ford P1391 Reasons :

How To Fix Ford P1391 Trouble Code ?

Which Ford cars have the code P1391?

  • P1391 Ford Aerostar
  • P1391 Ford Bronco
  • P1391 Ford C-Max
  • P1391 Ford C-Max Energi
  • P1391 Ford C-Max Hybrid
  • P1391 Ford Contour
  • P1391 Ford Crown Victoria
  • P1391 Ford EcoSport
  • P1391 Ford Econoline
  • P1391 Ford Edge
  • P1391 Ford Escape
  • P1391 Ford Escape Hybrid
  • P1391 Ford Escort
  • P1391 Ford Everest
  • P1391 Ford Excursion
  • P1391 Ford Expedition
  • P1391 Ford Explorer
  • P1391 Ford Explorer Sport Trac
  • P1391 Ford F-150
  • P1391 Ford F-250
  • P1391 Ford F-350
  • P1391 Ford Fiesta
  • P1391 Ford Flex
  • P1391 Ford Focus
  • P1391 Ford Focus Electric
  • P1391 Ford Freestar
  • P1391 Ford Freestyle
  • P1391 Ford Fusion
  • P1391 Ford Fusion Energi
  • P1391 Ford Fusion Hybrid
  • P1391 Ford Fusion Plug-In Hybrid
  • P1391 Ford GT
  • P1391 Ford Mustang
  • P1391 Ford Mustang Mach-E
  • P1391 Ford Mystique
  • P1391 Ford Probe
  • P1391 Ford Ranger
  • P1391 Ford Taurus
  • P1391 Ford Taurus X
  • P1391 Ford Tempo
  • P1391 Ford Thunderbird
  • P1391 Ford Transit
  • P1391 Ford Transit Connect
  • P1391 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.