B3940

B3940 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B3940 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 wiper switch is in the OFF position and the BHM park input from the wiper motor is not in park position. Troubleshoot for a wiper motor park switch circuit fault.

The suspension dump output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for suspension dump air solenoid fault, and for air pressure switch short circuit fault.

Ford B3940 Fault Code Meaning :

Ford B3940 Symptoms :

Ford B3940 Reasons :

How To Fix Ford B3940 Trouble Code ?

Which Ford cars have the code B3940?

  • B3940 Ford Aerostar
  • B3940 Ford Bronco
  • B3940 Ford C-Max
  • B3940 Ford C-Max Energi
  • B3940 Ford C-Max Hybrid
  • B3940 Ford Contour
  • B3940 Ford Crown Victoria
  • B3940 Ford EcoSport
  • B3940 Ford Econoline
  • B3940 Ford Edge
  • B3940 Ford Escape
  • B3940 Ford Escape Hybrid
  • B3940 Ford Escort
  • B3940 Ford Everest
  • B3940 Ford Excursion
  • B3940 Ford Expedition
  • B3940 Ford Explorer
  • B3940 Ford Explorer Sport Trac
  • B3940 Ford F-150
  • B3940 Ford F-250
  • B3940 Ford F-350
  • B3940 Ford Fiesta
  • B3940 Ford Flex
  • B3940 Ford Focus
  • B3940 Ford Focus Electric
  • B3940 Ford Freestar
  • B3940 Ford Freestyle
  • B3940 Ford Fusion
  • B3940 Ford Fusion Energi
  • B3940 Ford Fusion Hybrid
  • B3940 Ford Fusion Plug-In Hybrid
  • B3940 Ford GT
  • B3940 Ford Mustang
  • B3940 Ford Mustang Mach-E
  • B3940 Ford Mystique
  • B3940 Ford Probe
  • B3940 Ford Ranger
  • B3940 Ford Taurus
  • B3940 Ford Taurus X
  • B3940 Ford Tempo
  • B3940 Ford Thunderbird
  • B3940 Ford Transit
  • B3940 Ford Transit Connect
  • B3940 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.