B3791

B3791 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B3791 Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.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 disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford B3791 Fault Code Meaning :

Ford B3791 Symptoms :

Ford B3791 Reasons :

How To Fix Ford B3791 Trouble Code ?

Which Ford cars have the code B3791?

  • B3791 Ford Aerostar
  • B3791 Ford Bronco
  • B3791 Ford C-Max
  • B3791 Ford C-Max Energi
  • B3791 Ford C-Max Hybrid
  • B3791 Ford Contour
  • B3791 Ford Crown Victoria
  • B3791 Ford EcoSport
  • B3791 Ford Econoline
  • B3791 Ford Edge
  • B3791 Ford Escape
  • B3791 Ford Escape Hybrid
  • B3791 Ford Escort
  • B3791 Ford Everest
  • B3791 Ford Excursion
  • B3791 Ford Expedition
  • B3791 Ford Explorer
  • B3791 Ford Explorer Sport Trac
  • B3791 Ford F-150
  • B3791 Ford F-250
  • B3791 Ford F-350
  • B3791 Ford Fiesta
  • B3791 Ford Flex
  • B3791 Ford Focus
  • B3791 Ford Focus Electric
  • B3791 Ford Freestar
  • B3791 Ford Freestyle
  • B3791 Ford Fusion
  • B3791 Ford Fusion Energi
  • B3791 Ford Fusion Hybrid
  • B3791 Ford Fusion Plug-In Hybrid
  • B3791 Ford GT
  • B3791 Ford Mustang
  • B3791 Ford Mustang Mach-E
  • B3791 Ford Mystique
  • B3791 Ford Probe
  • B3791 Ford Ranger
  • B3791 Ford Taurus
  • B3791 Ford Taurus X
  • B3791 Ford Tempo
  • B3791 Ford Thunderbird
  • B3791 Ford Transit
  • B3791 Ford Transit Connect
  • B3791 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.