B0421
B0421 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.B0421 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 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 B0421 Fault Code Meaning :
Ford B0421 Symptoms :
Ford B0421 Reasons :
How To Fix Ford B0421 Trouble Code ?
Which Ford cars have the code B0421?
- B0421 Ford Aerostar
- B0421 Ford Bronco
- B0421 Ford C-Max
- B0421 Ford C-Max Energi
- B0421 Ford C-Max Hybrid
- B0421 Ford Contour
- B0421 Ford Crown Victoria
- B0421 Ford EcoSport
- B0421 Ford Econoline
- B0421 Ford Edge
- B0421 Ford Escape
- B0421 Ford Escape Hybrid
- B0421 Ford Escort
- B0421 Ford Everest
- B0421 Ford Excursion
- B0421 Ford Expedition
- B0421 Ford Explorer
- B0421 Ford Explorer Sport Trac
- B0421 Ford F-150
- B0421 Ford F-250
- B0421 Ford F-350
- B0421 Ford Fiesta
- B0421 Ford Flex
- B0421 Ford Focus
- B0421 Ford Focus Electric
- B0421 Ford Freestar
- B0421 Ford Freestyle
- B0421 Ford Fusion
- B0421 Ford Fusion Energi
- B0421 Ford Fusion Hybrid
- B0421 Ford Fusion Plug-In Hybrid
- B0421 Ford GT
- B0421 Ford Mustang
- B0421 Ford Mustang Mach-E
- B0421 Ford Mystique
- B0421 Ford Probe
- B0421 Ford Ranger
- B0421 Ford Taurus
- B0421 Ford Taurus X
- B0421 Ford Tempo
- B0421 Ford Thunderbird
- B0421 Ford Transit
- B0421 Ford Transit Connect
- B0421 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.