P3999
P3999 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.P3999 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 P3999 Fault Code Meaning :
Ford P3999 Symptoms :
Ford P3999 Reasons :
How To Fix Ford P3999 Trouble Code ?
Which Ford cars have the code P3999?
- P3999 Ford Aerostar
- P3999 Ford Bronco
- P3999 Ford C-Max
- P3999 Ford C-Max Energi
- P3999 Ford C-Max Hybrid
- P3999 Ford Contour
- P3999 Ford Crown Victoria
- P3999 Ford EcoSport
- P3999 Ford Econoline
- P3999 Ford Edge
- P3999 Ford Escape
- P3999 Ford Escape Hybrid
- P3999 Ford Escort
- P3999 Ford Everest
- P3999 Ford Excursion
- P3999 Ford Expedition
- P3999 Ford Explorer
- P3999 Ford Explorer Sport Trac
- P3999 Ford F-150
- P3999 Ford F-250
- P3999 Ford F-350
- P3999 Ford Fiesta
- P3999 Ford Flex
- P3999 Ford Focus
- P3999 Ford Focus Electric
- P3999 Ford Freestar
- P3999 Ford Freestyle
- P3999 Ford Fusion
- P3999 Ford Fusion Energi
- P3999 Ford Fusion Hybrid
- P3999 Ford Fusion Plug-In Hybrid
- P3999 Ford GT
- P3999 Ford Mustang
- P3999 Ford Mustang Mach-E
- P3999 Ford Mystique
- P3999 Ford Probe
- P3999 Ford Ranger
- P3999 Ford Taurus
- P3999 Ford Taurus X
- P3999 Ford Tempo
- P3999 Ford Thunderbird
- P3999 Ford Transit
- P3999 Ford Transit Connect
- P3999 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.