B3904

B3904 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B3904 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 position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.

A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.

Ford B3904 Fault Code Meaning :

Ford B3904 Symptoms :

Ford B3904 Reasons :

How To Fix Ford B3904 Trouble Code ?

Which Ford cars have the code B3904?

  • B3904 Ford Aerostar
  • B3904 Ford Bronco
  • B3904 Ford C-Max
  • B3904 Ford C-Max Energi
  • B3904 Ford C-Max Hybrid
  • B3904 Ford Contour
  • B3904 Ford Crown Victoria
  • B3904 Ford EcoSport
  • B3904 Ford Econoline
  • B3904 Ford Edge
  • B3904 Ford Escape
  • B3904 Ford Escape Hybrid
  • B3904 Ford Escort
  • B3904 Ford Everest
  • B3904 Ford Excursion
  • B3904 Ford Expedition
  • B3904 Ford Explorer
  • B3904 Ford Explorer Sport Trac
  • B3904 Ford F-150
  • B3904 Ford F-250
  • B3904 Ford F-350
  • B3904 Ford Fiesta
  • B3904 Ford Flex
  • B3904 Ford Focus
  • B3904 Ford Focus Electric
  • B3904 Ford Freestar
  • B3904 Ford Freestyle
  • B3904 Ford Fusion
  • B3904 Ford Fusion Energi
  • B3904 Ford Fusion Hybrid
  • B3904 Ford Fusion Plug-In Hybrid
  • B3904 Ford GT
  • B3904 Ford Mustang
  • B3904 Ford Mustang Mach-E
  • B3904 Ford Mystique
  • B3904 Ford Probe
  • B3904 Ford Ranger
  • B3904 Ford Taurus
  • B3904 Ford Taurus X
  • B3904 Ford Tempo
  • B3904 Ford Thunderbird
  • B3904 Ford Transit
  • B3904 Ford Transit Connect
  • B3904 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.