P991A

P991A Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P991A 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.

Engine starting is disabled and other optional functions may be interrupted until the fault is corrected and the ignition switch is cycled.

Ford P991A Fault Code Meaning :

Ford P991A Symptoms :

Ford P991A Reasons :

How To Fix Ford P991A Trouble Code ?

Which Ford cars have the code P991A?

  • P991A Ford Aerostar
  • P991A Ford Bronco
  • P991A Ford C-Max
  • P991A Ford C-Max Energi
  • P991A Ford C-Max Hybrid
  • P991A Ford Contour
  • P991A Ford Crown Victoria
  • P991A Ford EcoSport
  • P991A Ford Econoline
  • P991A Ford Edge
  • P991A Ford Escape
  • P991A Ford Escape Hybrid
  • P991A Ford Escort
  • P991A Ford Everest
  • P991A Ford Excursion
  • P991A Ford Expedition
  • P991A Ford Explorer
  • P991A Ford Explorer Sport Trac
  • P991A Ford F-150
  • P991A Ford F-250
  • P991A Ford F-350
  • P991A Ford Fiesta
  • P991A Ford Flex
  • P991A Ford Focus
  • P991A Ford Focus Electric
  • P991A Ford Freestar
  • P991A Ford Freestyle
  • P991A Ford Fusion
  • P991A Ford Fusion Energi
  • P991A Ford Fusion Hybrid
  • P991A Ford Fusion Plug-In Hybrid
  • P991A Ford GT
  • P991A Ford Mustang
  • P991A Ford Mustang Mach-E
  • P991A Ford Mystique
  • P991A Ford Probe
  • P991A Ford Ranger
  • P991A Ford Taurus
  • P991A Ford Taurus X
  • P991A Ford Tempo
  • P991A Ford Thunderbird
  • P991A Ford Transit
  • P991A Ford Transit Connect
  • P991A 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.