C1991

C1991 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C1991 Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

The suspension proportioning output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for suspension proportioning air solenoid fault, and for air pressure switch short circuit fault.

Ford C1991 Fault Code Meaning :

Ford C1991 Symptoms :

Ford C1991 Reasons :

How To Fix Ford C1991 Trouble Code ?

Which Ford cars have the code C1991?

  • C1991 Ford Aerostar
  • C1991 Ford Bronco
  • C1991 Ford C-Max
  • C1991 Ford C-Max Energi
  • C1991 Ford C-Max Hybrid
  • C1991 Ford Contour
  • C1991 Ford Crown Victoria
  • C1991 Ford EcoSport
  • C1991 Ford Econoline
  • C1991 Ford Edge
  • C1991 Ford Escape
  • C1991 Ford Escape Hybrid
  • C1991 Ford Escort
  • C1991 Ford Everest
  • C1991 Ford Excursion
  • C1991 Ford Expedition
  • C1991 Ford Explorer
  • C1991 Ford Explorer Sport Trac
  • C1991 Ford F-150
  • C1991 Ford F-250
  • C1991 Ford F-350
  • C1991 Ford Fiesta
  • C1991 Ford Flex
  • C1991 Ford Focus
  • C1991 Ford Focus Electric
  • C1991 Ford Freestar
  • C1991 Ford Freestyle
  • C1991 Ford Fusion
  • C1991 Ford Fusion Energi
  • C1991 Ford Fusion Hybrid
  • C1991 Ford Fusion Plug-In Hybrid
  • C1991 Ford GT
  • C1991 Ford Mustang
  • C1991 Ford Mustang Mach-E
  • C1991 Ford Mystique
  • C1991 Ford Probe
  • C1991 Ford Ranger
  • C1991 Ford Taurus
  • C1991 Ford Taurus X
  • C1991 Ford Tempo
  • C1991 Ford Thunderbird
  • C1991 Ford Transit
  • C1991 Ford Transit Connect
  • C1991 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.