B0991

B0991 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B0991 Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.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 B0991 Fault Code Meaning :

Ford B0991 Symptoms :

Ford B0991 Reasons :

How To Fix Ford B0991 Trouble Code ?

Which Ford cars have the code B0991?

  • B0991 Ford Aerostar
  • B0991 Ford Bronco
  • B0991 Ford C-Max
  • B0991 Ford C-Max Energi
  • B0991 Ford C-Max Hybrid
  • B0991 Ford Contour
  • B0991 Ford Crown Victoria
  • B0991 Ford EcoSport
  • B0991 Ford Econoline
  • B0991 Ford Edge
  • B0991 Ford Escape
  • B0991 Ford Escape Hybrid
  • B0991 Ford Escort
  • B0991 Ford Everest
  • B0991 Ford Excursion
  • B0991 Ford Expedition
  • B0991 Ford Explorer
  • B0991 Ford Explorer Sport Trac
  • B0991 Ford F-150
  • B0991 Ford F-250
  • B0991 Ford F-350
  • B0991 Ford Fiesta
  • B0991 Ford Flex
  • B0991 Ford Focus
  • B0991 Ford Focus Electric
  • B0991 Ford Freestar
  • B0991 Ford Freestyle
  • B0991 Ford Fusion
  • B0991 Ford Fusion Energi
  • B0991 Ford Fusion Hybrid
  • B0991 Ford Fusion Plug-In Hybrid
  • B0991 Ford GT
  • B0991 Ford Mustang
  • B0991 Ford Mustang Mach-E
  • B0991 Ford Mystique
  • B0991 Ford Probe
  • B0991 Ford Ranger
  • B0991 Ford Taurus
  • B0991 Ford Taurus X
  • B0991 Ford Tempo
  • B0991 Ford Thunderbird
  • B0991 Ford Transit
  • B0991 Ford Transit Connect
  • B0991 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.