B3421

B3421 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

B3421 Diagnosis

The CHM does not suupport PWM type DRLs. The vehicle has a BHM mismatch with the CHM. Replace the CHM with one that is compatible with the BHM.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.

Engine starting is disabled and other optional functions may be interrupted until the fault is corrected and the ignition switch is cycled.

Ford B3421 Fault Code Meaning :

Ford B3421 Symptoms :

Ford B3421 Reasons :

How To Fix Ford B3421 Trouble Code ?

Which Ford cars have the code B3421?

  • B3421 Ford Aerostar
  • B3421 Ford Bronco
  • B3421 Ford C-Max
  • B3421 Ford C-Max Energi
  • B3421 Ford C-Max Hybrid
  • B3421 Ford Contour
  • B3421 Ford Crown Victoria
  • B3421 Ford EcoSport
  • B3421 Ford Econoline
  • B3421 Ford Edge
  • B3421 Ford Escape
  • B3421 Ford Escape Hybrid
  • B3421 Ford Escort
  • B3421 Ford Everest
  • B3421 Ford Excursion
  • B3421 Ford Expedition
  • B3421 Ford Explorer
  • B3421 Ford Explorer Sport Trac
  • B3421 Ford F-150
  • B3421 Ford F-250
  • B3421 Ford F-350
  • B3421 Ford Fiesta
  • B3421 Ford Flex
  • B3421 Ford Focus
  • B3421 Ford Focus Electric
  • B3421 Ford Freestar
  • B3421 Ford Freestyle
  • B3421 Ford Fusion
  • B3421 Ford Fusion Energi
  • B3421 Ford Fusion Hybrid
  • B3421 Ford Fusion Plug-In Hybrid
  • B3421 Ford GT
  • B3421 Ford Mustang
  • B3421 Ford Mustang Mach-E
  • B3421 Ford Mystique
  • B3421 Ford Probe
  • B3421 Ford Ranger
  • B3421 Ford Taurus
  • B3421 Ford Taurus X
  • B3421 Ford Tempo
  • B3421 Ford Thunderbird
  • B3421 Ford Transit
  • B3421 Ford Transit Connect
  • B3421 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.