P91E4

P91E4 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P91E4 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 P91E4 Fault Code Meaning :

Ford P91E4 Symptoms :

Ford P91E4 Reasons :

How To Fix Ford P91E4 Trouble Code ?

Which Ford cars have the code P91E4?

  • P91E4 Ford Aerostar
  • P91E4 Ford Bronco
  • P91E4 Ford C-Max
  • P91E4 Ford C-Max Energi
  • P91E4 Ford C-Max Hybrid
  • P91E4 Ford Contour
  • P91E4 Ford Crown Victoria
  • P91E4 Ford EcoSport
  • P91E4 Ford Econoline
  • P91E4 Ford Edge
  • P91E4 Ford Escape
  • P91E4 Ford Escape Hybrid
  • P91E4 Ford Escort
  • P91E4 Ford Everest
  • P91E4 Ford Excursion
  • P91E4 Ford Expedition
  • P91E4 Ford Explorer
  • P91E4 Ford Explorer Sport Trac
  • P91E4 Ford F-150
  • P91E4 Ford F-250
  • P91E4 Ford F-350
  • P91E4 Ford Fiesta
  • P91E4 Ford Flex
  • P91E4 Ford Focus
  • P91E4 Ford Focus Electric
  • P91E4 Ford Freestar
  • P91E4 Ford Freestyle
  • P91E4 Ford Fusion
  • P91E4 Ford Fusion Energi
  • P91E4 Ford Fusion Hybrid
  • P91E4 Ford Fusion Plug-In Hybrid
  • P91E4 Ford GT
  • P91E4 Ford Mustang
  • P91E4 Ford Mustang Mach-E
  • P91E4 Ford Mystique
  • P91E4 Ford Probe
  • P91E4 Ford Ranger
  • P91E4 Ford Taurus
  • P91E4 Ford Taurus X
  • P91E4 Ford Tempo
  • P91E4 Ford Thunderbird
  • P91E4 Ford Transit
  • P91E4 Ford Transit Connect
  • P91E4 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.