B0401

B0401 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B0401 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 OFF.

The disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford B0401 Fault Code Meaning :

Ford B0401 Symptoms :

Ford B0401 Reasons :

How To Fix Ford B0401 Trouble Code ?

Which Ford cars have the code B0401?

  • B0401 Ford Aerostar
  • B0401 Ford Bronco
  • B0401 Ford C-Max
  • B0401 Ford C-Max Energi
  • B0401 Ford C-Max Hybrid
  • B0401 Ford Contour
  • B0401 Ford Crown Victoria
  • B0401 Ford EcoSport
  • B0401 Ford Econoline
  • B0401 Ford Edge
  • B0401 Ford Escape
  • B0401 Ford Escape Hybrid
  • B0401 Ford Escort
  • B0401 Ford Everest
  • B0401 Ford Excursion
  • B0401 Ford Expedition
  • B0401 Ford Explorer
  • B0401 Ford Explorer Sport Trac
  • B0401 Ford F-150
  • B0401 Ford F-250
  • B0401 Ford F-350
  • B0401 Ford Fiesta
  • B0401 Ford Flex
  • B0401 Ford Focus
  • B0401 Ford Focus Electric
  • B0401 Ford Freestar
  • B0401 Ford Freestyle
  • B0401 Ford Fusion
  • B0401 Ford Fusion Energi
  • B0401 Ford Fusion Hybrid
  • B0401 Ford Fusion Plug-In Hybrid
  • B0401 Ford GT
  • B0401 Ford Mustang
  • B0401 Ford Mustang Mach-E
  • B0401 Ford Mystique
  • B0401 Ford Probe
  • B0401 Ford Ranger
  • B0401 Ford Taurus
  • B0401 Ford Taurus X
  • B0401 Ford Tempo
  • B0401 Ford Thunderbird
  • B0401 Ford Transit
  • B0401 Ford Transit Connect
  • B0401 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.