B3879

B3879 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B3879 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 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 B3879 Fault Code Meaning :

Ford B3879 Symptoms :

Ford B3879 Reasons :

How To Fix Ford B3879 Trouble Code ?

Which Ford cars have the code B3879?

  • B3879 Ford Aerostar
  • B3879 Ford Bronco
  • B3879 Ford C-Max
  • B3879 Ford C-Max Energi
  • B3879 Ford C-Max Hybrid
  • B3879 Ford Contour
  • B3879 Ford Crown Victoria
  • B3879 Ford EcoSport
  • B3879 Ford Econoline
  • B3879 Ford Edge
  • B3879 Ford Escape
  • B3879 Ford Escape Hybrid
  • B3879 Ford Escort
  • B3879 Ford Everest
  • B3879 Ford Excursion
  • B3879 Ford Expedition
  • B3879 Ford Explorer
  • B3879 Ford Explorer Sport Trac
  • B3879 Ford F-150
  • B3879 Ford F-250
  • B3879 Ford F-350
  • B3879 Ford Fiesta
  • B3879 Ford Flex
  • B3879 Ford Focus
  • B3879 Ford Focus Electric
  • B3879 Ford Freestar
  • B3879 Ford Freestyle
  • B3879 Ford Fusion
  • B3879 Ford Fusion Energi
  • B3879 Ford Fusion Hybrid
  • B3879 Ford Fusion Plug-In Hybrid
  • B3879 Ford GT
  • B3879 Ford Mustang
  • B3879 Ford Mustang Mach-E
  • B3879 Ford Mystique
  • B3879 Ford Probe
  • B3879 Ford Ranger
  • B3879 Ford Taurus
  • B3879 Ford Taurus X
  • B3879 Ford Tempo
  • B3879 Ford Thunderbird
  • B3879 Ford Transit
  • B3879 Ford Transit Connect
  • B3879 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.