P91A1

P91A1 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P91A1 Diagnosis

The output circuits that are powered by VBAT2 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. 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 P91A1 Fault Code Meaning :

Ford P91A1 Symptoms :

Ford P91A1 Reasons :

How To Fix Ford P91A1 Trouble Code ?

Which Ford cars have the code P91A1?

  • P91A1 Ford Aerostar
  • P91A1 Ford Bronco
  • P91A1 Ford C-Max
  • P91A1 Ford C-Max Energi
  • P91A1 Ford C-Max Hybrid
  • P91A1 Ford Contour
  • P91A1 Ford Crown Victoria
  • P91A1 Ford EcoSport
  • P91A1 Ford Econoline
  • P91A1 Ford Edge
  • P91A1 Ford Escape
  • P91A1 Ford Escape Hybrid
  • P91A1 Ford Escort
  • P91A1 Ford Everest
  • P91A1 Ford Excursion
  • P91A1 Ford Expedition
  • P91A1 Ford Explorer
  • P91A1 Ford Explorer Sport Trac
  • P91A1 Ford F-150
  • P91A1 Ford F-250
  • P91A1 Ford F-350
  • P91A1 Ford Fiesta
  • P91A1 Ford Flex
  • P91A1 Ford Focus
  • P91A1 Ford Focus Electric
  • P91A1 Ford Freestar
  • P91A1 Ford Freestyle
  • P91A1 Ford Fusion
  • P91A1 Ford Fusion Energi
  • P91A1 Ford Fusion Hybrid
  • P91A1 Ford Fusion Plug-In Hybrid
  • P91A1 Ford GT
  • P91A1 Ford Mustang
  • P91A1 Ford Mustang Mach-E
  • P91A1 Ford Mystique
  • P91A1 Ford Probe
  • P91A1 Ford Ranger
  • P91A1 Ford Taurus
  • P91A1 Ford Taurus X
  • P91A1 Ford Tempo
  • P91A1 Ford Thunderbird
  • P91A1 Ford Transit
  • P91A1 Ford Transit Connect
  • P91A1 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.