B3921
B3921 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.B3921 Diagnosis
The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 2 air solenoid fault, and for air pressure switch short 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 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 B3921 Fault Code Meaning :
Ford B3921 Symptoms :
Ford B3921 Reasons :
How To Fix Ford B3921 Trouble Code ?
Which Ford cars have the code B3921?
- B3921 Ford Aerostar
- B3921 Ford Bronco
- B3921 Ford C-Max
- B3921 Ford C-Max Energi
- B3921 Ford C-Max Hybrid
- B3921 Ford Contour
- B3921 Ford Crown Victoria
- B3921 Ford EcoSport
- B3921 Ford Econoline
- B3921 Ford Edge
- B3921 Ford Escape
- B3921 Ford Escape Hybrid
- B3921 Ford Escort
- B3921 Ford Everest
- B3921 Ford Excursion
- B3921 Ford Expedition
- B3921 Ford Explorer
- B3921 Ford Explorer Sport Trac
- B3921 Ford F-150
- B3921 Ford F-250
- B3921 Ford F-350
- B3921 Ford Fiesta
- B3921 Ford Flex
- B3921 Ford Focus
- B3921 Ford Focus Electric
- B3921 Ford Freestar
- B3921 Ford Freestyle
- B3921 Ford Fusion
- B3921 Ford Fusion Energi
- B3921 Ford Fusion Hybrid
- B3921 Ford Fusion Plug-In Hybrid
- B3921 Ford GT
- B3921 Ford Mustang
- B3921 Ford Mustang Mach-E
- B3921 Ford Mystique
- B3921 Ford Probe
- B3921 Ford Ranger
- B3921 Ford Taurus
- B3921 Ford Taurus X
- B3921 Ford Tempo
- B3921 Ford Thunderbird
- B3921 Ford Transit
- B3921 Ford Transit Connect
- B3921 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.