C1091

C1091 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C1091 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 C1091 Fault Code Meaning :

Ford C1091 Symptoms :

Ford C1091 Reasons :

How To Fix Ford C1091 Trouble Code ?

Which Ford cars have the code C1091?

  • C1091 Ford Aerostar
  • C1091 Ford Bronco
  • C1091 Ford C-Max
  • C1091 Ford C-Max Energi
  • C1091 Ford C-Max Hybrid
  • C1091 Ford Contour
  • C1091 Ford Crown Victoria
  • C1091 Ford EcoSport
  • C1091 Ford Econoline
  • C1091 Ford Edge
  • C1091 Ford Escape
  • C1091 Ford Escape Hybrid
  • C1091 Ford Escort
  • C1091 Ford Everest
  • C1091 Ford Excursion
  • C1091 Ford Expedition
  • C1091 Ford Explorer
  • C1091 Ford Explorer Sport Trac
  • C1091 Ford F-150
  • C1091 Ford F-250
  • C1091 Ford F-350
  • C1091 Ford Fiesta
  • C1091 Ford Flex
  • C1091 Ford Focus
  • C1091 Ford Focus Electric
  • C1091 Ford Freestar
  • C1091 Ford Freestyle
  • C1091 Ford Fusion
  • C1091 Ford Fusion Energi
  • C1091 Ford Fusion Hybrid
  • C1091 Ford Fusion Plug-In Hybrid
  • C1091 Ford GT
  • C1091 Ford Mustang
  • C1091 Ford Mustang Mach-E
  • C1091 Ford Mystique
  • C1091 Ford Probe
  • C1091 Ford Ranger
  • C1091 Ford Taurus
  • C1091 Ford Taurus X
  • C1091 Ford Tempo
  • C1091 Ford Thunderbird
  • C1091 Ford Transit
  • C1091 Ford Transit Connect
  • C1091 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.