P3900
P3900 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.P3900 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 position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.
Engine starting is disabled and other optional functions may be interrupted until the fault is corrected and the ignition switch is cycled.
Ford P3900 Fault Code Meaning :
Ford P3900 Symptoms :
Ford P3900 Reasons :
How To Fix Ford P3900 Trouble Code ?
Which Ford cars have the code P3900?
- P3900 Ford Aerostar
- P3900 Ford Bronco
- P3900 Ford C-Max
- P3900 Ford C-Max Energi
- P3900 Ford C-Max Hybrid
- P3900 Ford Contour
- P3900 Ford Crown Victoria
- P3900 Ford EcoSport
- P3900 Ford Econoline
- P3900 Ford Edge
- P3900 Ford Escape
- P3900 Ford Escape Hybrid
- P3900 Ford Escort
- P3900 Ford Everest
- P3900 Ford Excursion
- P3900 Ford Expedition
- P3900 Ford Explorer
- P3900 Ford Explorer Sport Trac
- P3900 Ford F-150
- P3900 Ford F-250
- P3900 Ford F-350
- P3900 Ford Fiesta
- P3900 Ford Flex
- P3900 Ford Focus
- P3900 Ford Focus Electric
- P3900 Ford Freestar
- P3900 Ford Freestyle
- P3900 Ford Fusion
- P3900 Ford Fusion Energi
- P3900 Ford Fusion Hybrid
- P3900 Ford Fusion Plug-In Hybrid
- P3900 Ford GT
- P3900 Ford Mustang
- P3900 Ford Mustang Mach-E
- P3900 Ford Mystique
- P3900 Ford Probe
- P3900 Ford Ranger
- P3900 Ford Taurus
- P3900 Ford Taurus X
- P3900 Ford Tempo
- P3900 Ford Thunderbird
- P3900 Ford Transit
- P3900 Ford Transit Connect
- P3900 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.