B1921

B1921 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B1921 Diagnosis

The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.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 B1921 Fault Code Meaning :

Ford B1921 Symptoms :

Ford B1921 Reasons :

How To Fix Ford B1921 Trouble Code ?

Which Ford cars have the code B1921?

  • B1921 Ford Aerostar
  • B1921 Ford Bronco
  • B1921 Ford C-Max
  • B1921 Ford C-Max Energi
  • B1921 Ford C-Max Hybrid
  • B1921 Ford Contour
  • B1921 Ford Crown Victoria
  • B1921 Ford EcoSport
  • B1921 Ford Econoline
  • B1921 Ford Edge
  • B1921 Ford Escape
  • B1921 Ford Escape Hybrid
  • B1921 Ford Escort
  • B1921 Ford Everest
  • B1921 Ford Excursion
  • B1921 Ford Expedition
  • B1921 Ford Explorer
  • B1921 Ford Explorer Sport Trac
  • B1921 Ford F-150
  • B1921 Ford F-250
  • B1921 Ford F-350
  • B1921 Ford Fiesta
  • B1921 Ford Flex
  • B1921 Ford Focus
  • B1921 Ford Focus Electric
  • B1921 Ford Freestar
  • B1921 Ford Freestyle
  • B1921 Ford Fusion
  • B1921 Ford Fusion Energi
  • B1921 Ford Fusion Hybrid
  • B1921 Ford Fusion Plug-In Hybrid
  • B1921 Ford GT
  • B1921 Ford Mustang
  • B1921 Ford Mustang Mach-E
  • B1921 Ford Mystique
  • B1921 Ford Probe
  • B1921 Ford Ranger
  • B1921 Ford Taurus
  • B1921 Ford Taurus X
  • B1921 Ford Tempo
  • B1921 Ford Thunderbird
  • B1921 Ford Transit
  • B1921 Ford Transit Connect
  • B1921 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.