B21FB
B21FB Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.B21FB Diagnosis
The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.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 FF.
The BHM drives the 5 cab overhead clearance and ID lamps from connector B5 pin C on circuit 46. All other marker and tail lamps are driven from BHM connector B1,K on circuit 23. This circuit connects to the CHM as an input at connector J3,P.
Ford B21FB Fault Code Meaning :
Ford B21FB Symptoms :
Ford B21FB Reasons :
How To Fix Ford B21FB Trouble Code ?
Which Ford cars have the code B21FB?
- B21FB Ford Aerostar
- B21FB Ford Bronco
- B21FB Ford C-Max
- B21FB Ford C-Max Energi
- B21FB Ford C-Max Hybrid
- B21FB Ford Contour
- B21FB Ford Crown Victoria
- B21FB Ford EcoSport
- B21FB Ford Econoline
- B21FB Ford Edge
- B21FB Ford Escape
- B21FB Ford Escape Hybrid
- B21FB Ford Escort
- B21FB Ford Everest
- B21FB Ford Excursion
- B21FB Ford Expedition
- B21FB Ford Explorer
- B21FB Ford Explorer Sport Trac
- B21FB Ford F-150
- B21FB Ford F-250
- B21FB Ford F-350
- B21FB Ford Fiesta
- B21FB Ford Flex
- B21FB Ford Focus
- B21FB Ford Focus Electric
- B21FB Ford Freestar
- B21FB Ford Freestyle
- B21FB Ford Fusion
- B21FB Ford Fusion Energi
- B21FB Ford Fusion Hybrid
- B21FB Ford Fusion Plug-In Hybrid
- B21FB Ford GT
- B21FB Ford Mustang
- B21FB Ford Mustang Mach-E
- B21FB Ford Mystique
- B21FB Ford Probe
- B21FB Ford Ranger
- B21FB Ford Taurus
- B21FB Ford Taurus X
- B21FB Ford Tempo
- B21FB Ford Thunderbird
- B21FB Ford Transit
- B21FB Ford Transit Connect
- B21FB 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.