B0791

B0791 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B0791 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 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 FF.

The BHM drives the 5 cab overhead clearance and ID lamps from connector B5 pin C on circuit 46. All other marker and tail lamps are driven from BHM connector B1,K on circuit 23. This circuit connects to the CHM as an input at connector J3,P.

Ford B0791 Fault Code Meaning :

Ford B0791 Symptoms :

Ford B0791 Reasons :

How To Fix Ford B0791 Trouble Code ?

Which Ford cars have the code B0791?

  • B0791 Ford Aerostar
  • B0791 Ford Bronco
  • B0791 Ford C-Max
  • B0791 Ford C-Max Energi
  • B0791 Ford C-Max Hybrid
  • B0791 Ford Contour
  • B0791 Ford Crown Victoria
  • B0791 Ford EcoSport
  • B0791 Ford Econoline
  • B0791 Ford Edge
  • B0791 Ford Escape
  • B0791 Ford Escape Hybrid
  • B0791 Ford Escort
  • B0791 Ford Everest
  • B0791 Ford Excursion
  • B0791 Ford Expedition
  • B0791 Ford Explorer
  • B0791 Ford Explorer Sport Trac
  • B0791 Ford F-150
  • B0791 Ford F-250
  • B0791 Ford F-350
  • B0791 Ford Fiesta
  • B0791 Ford Flex
  • B0791 Ford Focus
  • B0791 Ford Focus Electric
  • B0791 Ford Freestar
  • B0791 Ford Freestyle
  • B0791 Ford Fusion
  • B0791 Ford Fusion Energi
  • B0791 Ford Fusion Hybrid
  • B0791 Ford Fusion Plug-In Hybrid
  • B0791 Ford GT
  • B0791 Ford Mustang
  • B0791 Ford Mustang Mach-E
  • B0791 Ford Mystique
  • B0791 Ford Probe
  • B0791 Ford Ranger
  • B0791 Ford Taurus
  • B0791 Ford Taurus X
  • B0791 Ford Tempo
  • B0791 Ford Thunderbird
  • B0791 Ford Transit
  • B0791 Ford Transit Connect
  • B0791 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.