B3986

B3986 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B3986 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 ICU reads the wiper switch position and sends the status of the switch to the BHM. This fault becomes active when the ICU reads that both LO speed and HI speed are active at the same time.

The BHM measures the current on this circuit when the headlamp output is commanded ON. This fault indicates that the left high beam headlamp circuit is drawing more current than it is designed to supply and possibly there is a wiring fault shorting this circuit to ground.

Ford B3986 Fault Code Meaning :

Ford B3986 Symptoms :

Ford B3986 Reasons :

How To Fix Ford B3986 Trouble Code ?

Which Ford cars have the code B3986?

  • B3986 Ford Aerostar
  • B3986 Ford Bronco
  • B3986 Ford C-Max
  • B3986 Ford C-Max Energi
  • B3986 Ford C-Max Hybrid
  • B3986 Ford Contour
  • B3986 Ford Crown Victoria
  • B3986 Ford EcoSport
  • B3986 Ford Econoline
  • B3986 Ford Edge
  • B3986 Ford Escape
  • B3986 Ford Escape Hybrid
  • B3986 Ford Escort
  • B3986 Ford Everest
  • B3986 Ford Excursion
  • B3986 Ford Expedition
  • B3986 Ford Explorer
  • B3986 Ford Explorer Sport Trac
  • B3986 Ford F-150
  • B3986 Ford F-250
  • B3986 Ford F-350
  • B3986 Ford Fiesta
  • B3986 Ford Flex
  • B3986 Ford Focus
  • B3986 Ford Focus Electric
  • B3986 Ford Freestar
  • B3986 Ford Freestyle
  • B3986 Ford Fusion
  • B3986 Ford Fusion Energi
  • B3986 Ford Fusion Hybrid
  • B3986 Ford Fusion Plug-In Hybrid
  • B3986 Ford GT
  • B3986 Ford Mustang
  • B3986 Ford Mustang Mach-E
  • B3986 Ford Mystique
  • B3986 Ford Probe
  • B3986 Ford Ranger
  • B3986 Ford Taurus
  • B3986 Ford Taurus X
  • B3986 Ford Tempo
  • B3986 Ford Thunderbird
  • B3986 Ford Transit
  • B3986 Ford Transit Connect
  • B3986 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.