P8C91

P8C91 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P8C91 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 position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.

A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.

Ford P8C91 Fault Code Meaning :

Ford P8C91 Symptoms :

Ford P8C91 Reasons :

How To Fix Ford P8C91 Trouble Code ?

Which Ford cars have the code P8C91?

  • P8C91 Ford Aerostar
  • P8C91 Ford Bronco
  • P8C91 Ford C-Max
  • P8C91 Ford C-Max Energi
  • P8C91 Ford C-Max Hybrid
  • P8C91 Ford Contour
  • P8C91 Ford Crown Victoria
  • P8C91 Ford EcoSport
  • P8C91 Ford Econoline
  • P8C91 Ford Edge
  • P8C91 Ford Escape
  • P8C91 Ford Escape Hybrid
  • P8C91 Ford Escort
  • P8C91 Ford Everest
  • P8C91 Ford Excursion
  • P8C91 Ford Expedition
  • P8C91 Ford Explorer
  • P8C91 Ford Explorer Sport Trac
  • P8C91 Ford F-150
  • P8C91 Ford F-250
  • P8C91 Ford F-350
  • P8C91 Ford Fiesta
  • P8C91 Ford Flex
  • P8C91 Ford Focus
  • P8C91 Ford Focus Electric
  • P8C91 Ford Freestar
  • P8C91 Ford Freestyle
  • P8C91 Ford Fusion
  • P8C91 Ford Fusion Energi
  • P8C91 Ford Fusion Hybrid
  • P8C91 Ford Fusion Plug-In Hybrid
  • P8C91 Ford GT
  • P8C91 Ford Mustang
  • P8C91 Ford Mustang Mach-E
  • P8C91 Ford Mystique
  • P8C91 Ford Probe
  • P8C91 Ford Ranger
  • P8C91 Ford Taurus
  • P8C91 Ford Taurus X
  • P8C91 Ford Tempo
  • P8C91 Ford Thunderbird
  • P8C91 Ford Transit
  • P8C91 Ford Transit Connect
  • P8C91 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.