B0391
B0391 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.B0391 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 B0391 Fault Code Meaning :
Ford B0391 Symptoms :
Ford B0391 Reasons :
How To Fix Ford B0391 Trouble Code ?
Which Ford cars have the code B0391?
- B0391 Ford Aerostar
- B0391 Ford Bronco
- B0391 Ford C-Max
- B0391 Ford C-Max Energi
- B0391 Ford C-Max Hybrid
- B0391 Ford Contour
- B0391 Ford Crown Victoria
- B0391 Ford EcoSport
- B0391 Ford Econoline
- B0391 Ford Edge
- B0391 Ford Escape
- B0391 Ford Escape Hybrid
- B0391 Ford Escort
- B0391 Ford Everest
- B0391 Ford Excursion
- B0391 Ford Expedition
- B0391 Ford Explorer
- B0391 Ford Explorer Sport Trac
- B0391 Ford F-150
- B0391 Ford F-250
- B0391 Ford F-350
- B0391 Ford Fiesta
- B0391 Ford Flex
- B0391 Ford Focus
- B0391 Ford Focus Electric
- B0391 Ford Freestar
- B0391 Ford Freestyle
- B0391 Ford Fusion
- B0391 Ford Fusion Energi
- B0391 Ford Fusion Hybrid
- B0391 Ford Fusion Plug-In Hybrid
- B0391 Ford GT
- B0391 Ford Mustang
- B0391 Ford Mustang Mach-E
- B0391 Ford Mystique
- B0391 Ford Probe
- B0391 Ford Ranger
- B0391 Ford Taurus
- B0391 Ford Taurus X
- B0391 Ford Tempo
- B0391 Ford Thunderbird
- B0391 Ford Transit
- B0391 Ford Transit Connect
- B0391 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.