P4A91

P4A91 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P4A91 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 P4A91 Fault Code Meaning :

Ford P4A91 Symptoms :

Ford P4A91 Reasons :

How To Fix Ford P4A91 Trouble Code ?

Which Ford cars have the code P4A91?

  • P4A91 Ford Aerostar
  • P4A91 Ford Bronco
  • P4A91 Ford C-Max
  • P4A91 Ford C-Max Energi
  • P4A91 Ford C-Max Hybrid
  • P4A91 Ford Contour
  • P4A91 Ford Crown Victoria
  • P4A91 Ford EcoSport
  • P4A91 Ford Econoline
  • P4A91 Ford Edge
  • P4A91 Ford Escape
  • P4A91 Ford Escape Hybrid
  • P4A91 Ford Escort
  • P4A91 Ford Everest
  • P4A91 Ford Excursion
  • P4A91 Ford Expedition
  • P4A91 Ford Explorer
  • P4A91 Ford Explorer Sport Trac
  • P4A91 Ford F-150
  • P4A91 Ford F-250
  • P4A91 Ford F-350
  • P4A91 Ford Fiesta
  • P4A91 Ford Flex
  • P4A91 Ford Focus
  • P4A91 Ford Focus Electric
  • P4A91 Ford Freestar
  • P4A91 Ford Freestyle
  • P4A91 Ford Fusion
  • P4A91 Ford Fusion Energi
  • P4A91 Ford Fusion Hybrid
  • P4A91 Ford Fusion Plug-In Hybrid
  • P4A91 Ford GT
  • P4A91 Ford Mustang
  • P4A91 Ford Mustang Mach-E
  • P4A91 Ford Mystique
  • P4A91 Ford Probe
  • P4A91 Ford Ranger
  • P4A91 Ford Taurus
  • P4A91 Ford Taurus X
  • P4A91 Ford Tempo
  • P4A91 Ford Thunderbird
  • P4A91 Ford Transit
  • P4A91 Ford Transit Connect
  • P4A91 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.