B1991

B1991 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B1991 Diagnosis

The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open circuit fault.The BHM is detecting more than one smart switch with the same ID number present on the vehicle. The outputs controlled by the switch and the indicator in the switch are commanded OFF.

The top-of-clutch switch and bottom-of-clutch switch are both measured as closed at the same time. Troubleshoot for clutch switch shorted, or for a wiring fault between the clutch switch and the BHM.

Ford B1991 Fault Code Meaning :

Ford B1991 Symptoms :

Ford B1991 Reasons :

How To Fix Ford B1991 Trouble Code ?

Which Ford cars have the code B1991?

  • B1991 Ford Aerostar
  • B1991 Ford Bronco
  • B1991 Ford C-Max
  • B1991 Ford C-Max Energi
  • B1991 Ford C-Max Hybrid
  • B1991 Ford Contour
  • B1991 Ford Crown Victoria
  • B1991 Ford EcoSport
  • B1991 Ford Econoline
  • B1991 Ford Edge
  • B1991 Ford Escape
  • B1991 Ford Escape Hybrid
  • B1991 Ford Escort
  • B1991 Ford Everest
  • B1991 Ford Excursion
  • B1991 Ford Expedition
  • B1991 Ford Explorer
  • B1991 Ford Explorer Sport Trac
  • B1991 Ford F-150
  • B1991 Ford F-250
  • B1991 Ford F-350
  • B1991 Ford Fiesta
  • B1991 Ford Flex
  • B1991 Ford Focus
  • B1991 Ford Focus Electric
  • B1991 Ford Freestar
  • B1991 Ford Freestyle
  • B1991 Ford Fusion
  • B1991 Ford Fusion Energi
  • B1991 Ford Fusion Hybrid
  • B1991 Ford Fusion Plug-In Hybrid
  • B1991 Ford GT
  • B1991 Ford Mustang
  • B1991 Ford Mustang Mach-E
  • B1991 Ford Mystique
  • B1991 Ford Probe
  • B1991 Ford Ranger
  • B1991 Ford Taurus
  • B1991 Ford Taurus X
  • B1991 Ford Tempo
  • B1991 Ford Thunderbird
  • B1991 Ford Transit
  • B1991 Ford Transit Connect
  • B1991 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.