P391B
P391B Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.P391B 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 P391B Fault Code Meaning :
Ford P391B Symptoms :
Ford P391B Reasons :
How To Fix Ford P391B Trouble Code ?
Which Ford cars have the code P391B?
- P391B Ford Aerostar
- P391B Ford Bronco
- P391B Ford C-Max
- P391B Ford C-Max Energi
- P391B Ford C-Max Hybrid
- P391B Ford Contour
- P391B Ford Crown Victoria
- P391B Ford EcoSport
- P391B Ford Econoline
- P391B Ford Edge
- P391B Ford Escape
- P391B Ford Escape Hybrid
- P391B Ford Escort
- P391B Ford Everest
- P391B Ford Excursion
- P391B Ford Expedition
- P391B Ford Explorer
- P391B Ford Explorer Sport Trac
- P391B Ford F-150
- P391B Ford F-250
- P391B Ford F-350
- P391B Ford Fiesta
- P391B Ford Flex
- P391B Ford Focus
- P391B Ford Focus Electric
- P391B Ford Freestar
- P391B Ford Freestyle
- P391B Ford Fusion
- P391B Ford Fusion Energi
- P391B Ford Fusion Hybrid
- P391B Ford Fusion Plug-In Hybrid
- P391B Ford GT
- P391B Ford Mustang
- P391B Ford Mustang Mach-E
- P391B Ford Mystique
- P391B Ford Probe
- P391B Ford Ranger
- P391B Ford Taurus
- P391B Ford Taurus X
- P391B Ford Tempo
- P391B Ford Thunderbird
- P391B Ford Transit
- P391B Ford Transit Connect
- P391B 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.