B3851

B3851 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B3851 Diagnosis

The output circuits that are powered by VBAT2 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. 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 B3851 Fault Code Meaning :

Ford B3851 Symptoms :

Ford B3851 Reasons :

How To Fix Ford B3851 Trouble Code ?

Which Ford cars have the code B3851?

  • B3851 Ford Aerostar
  • B3851 Ford Bronco
  • B3851 Ford C-Max
  • B3851 Ford C-Max Energi
  • B3851 Ford C-Max Hybrid
  • B3851 Ford Contour
  • B3851 Ford Crown Victoria
  • B3851 Ford EcoSport
  • B3851 Ford Econoline
  • B3851 Ford Edge
  • B3851 Ford Escape
  • B3851 Ford Escape Hybrid
  • B3851 Ford Escort
  • B3851 Ford Everest
  • B3851 Ford Excursion
  • B3851 Ford Expedition
  • B3851 Ford Explorer
  • B3851 Ford Explorer Sport Trac
  • B3851 Ford F-150
  • B3851 Ford F-250
  • B3851 Ford F-350
  • B3851 Ford Fiesta
  • B3851 Ford Flex
  • B3851 Ford Focus
  • B3851 Ford Focus Electric
  • B3851 Ford Freestar
  • B3851 Ford Freestyle
  • B3851 Ford Fusion
  • B3851 Ford Fusion Energi
  • B3851 Ford Fusion Hybrid
  • B3851 Ford Fusion Plug-In Hybrid
  • B3851 Ford GT
  • B3851 Ford Mustang
  • B3851 Ford Mustang Mach-E
  • B3851 Ford Mystique
  • B3851 Ford Probe
  • B3851 Ford Ranger
  • B3851 Ford Taurus
  • B3851 Ford Taurus X
  • B3851 Ford Tempo
  • B3851 Ford Thunderbird
  • B3851 Ford Transit
  • B3851 Ford Transit Connect
  • B3851 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.