B3949

B3949 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B3949 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 B3949 Fault Code Meaning :

Ford B3949 Symptoms :

Ford B3949 Reasons :

How To Fix Ford B3949 Trouble Code ?

Which Ford cars have the code B3949?

  • B3949 Ford Aerostar
  • B3949 Ford Bronco
  • B3949 Ford C-Max
  • B3949 Ford C-Max Energi
  • B3949 Ford C-Max Hybrid
  • B3949 Ford Contour
  • B3949 Ford Crown Victoria
  • B3949 Ford EcoSport
  • B3949 Ford Econoline
  • B3949 Ford Edge
  • B3949 Ford Escape
  • B3949 Ford Escape Hybrid
  • B3949 Ford Escort
  • B3949 Ford Everest
  • B3949 Ford Excursion
  • B3949 Ford Expedition
  • B3949 Ford Explorer
  • B3949 Ford Explorer Sport Trac
  • B3949 Ford F-150
  • B3949 Ford F-250
  • B3949 Ford F-350
  • B3949 Ford Fiesta
  • B3949 Ford Flex
  • B3949 Ford Focus
  • B3949 Ford Focus Electric
  • B3949 Ford Freestar
  • B3949 Ford Freestyle
  • B3949 Ford Fusion
  • B3949 Ford Fusion Energi
  • B3949 Ford Fusion Hybrid
  • B3949 Ford Fusion Plug-In Hybrid
  • B3949 Ford GT
  • B3949 Ford Mustang
  • B3949 Ford Mustang Mach-E
  • B3949 Ford Mystique
  • B3949 Ford Probe
  • B3949 Ford Ranger
  • B3949 Ford Taurus
  • B3949 Ford Taurus X
  • B3949 Ford Tempo
  • B3949 Ford Thunderbird
  • B3949 Ford Transit
  • B3949 Ford Transit Connect
  • B3949 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.