P4C21
P4C21 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.P4C21 Diagnosis
The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open circuit fault.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 top-of-clutch switch and bottom-of-clutch switch are both measured as closed at the same time. Troubleshoot for clutch switch shorted, or for a wiring fault between the clutch switch and the BHM.
Ford P4C21 Fault Code Meaning :
Ford P4C21 Symptoms :
Ford P4C21 Reasons :
How To Fix Ford P4C21 Trouble Code ?
Which Ford cars have the code P4C21?
- P4C21 Ford Aerostar
- P4C21 Ford Bronco
- P4C21 Ford C-Max
- P4C21 Ford C-Max Energi
- P4C21 Ford C-Max Hybrid
- P4C21 Ford Contour
- P4C21 Ford Crown Victoria
- P4C21 Ford EcoSport
- P4C21 Ford Econoline
- P4C21 Ford Edge
- P4C21 Ford Escape
- P4C21 Ford Escape Hybrid
- P4C21 Ford Escort
- P4C21 Ford Everest
- P4C21 Ford Excursion
- P4C21 Ford Expedition
- P4C21 Ford Explorer
- P4C21 Ford Explorer Sport Trac
- P4C21 Ford F-150
- P4C21 Ford F-250
- P4C21 Ford F-350
- P4C21 Ford Fiesta
- P4C21 Ford Flex
- P4C21 Ford Focus
- P4C21 Ford Focus Electric
- P4C21 Ford Freestar
- P4C21 Ford Freestyle
- P4C21 Ford Fusion
- P4C21 Ford Fusion Energi
- P4C21 Ford Fusion Hybrid
- P4C21 Ford Fusion Plug-In Hybrid
- P4C21 Ford GT
- P4C21 Ford Mustang
- P4C21 Ford Mustang Mach-E
- P4C21 Ford Mystique
- P4C21 Ford Probe
- P4C21 Ford Ranger
- P4C21 Ford Taurus
- P4C21 Ford Taurus X
- P4C21 Ford Tempo
- P4C21 Ford Thunderbird
- P4C21 Ford Transit
- P4C21 Ford Transit Connect
- P4C21 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.