C3684
C3684 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.C3684 Diagnosis
The axle lift 2 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for axle lift 2 air solenoid fault, and for air pressure switch short circuit fault.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.
When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.
Ford C3684 Fault Code Meaning :
Ford C3684 Symptoms :
Ford C3684 Reasons :
How To Fix Ford C3684 Trouble Code ?
Which Ford cars have the code C3684?
- C3684 Ford Aerostar
- C3684 Ford Bronco
- C3684 Ford C-Max
- C3684 Ford C-Max Energi
- C3684 Ford C-Max Hybrid
- C3684 Ford Contour
- C3684 Ford Crown Victoria
- C3684 Ford EcoSport
- C3684 Ford Econoline
- C3684 Ford Edge
- C3684 Ford Escape
- C3684 Ford Escape Hybrid
- C3684 Ford Escort
- C3684 Ford Everest
- C3684 Ford Excursion
- C3684 Ford Expedition
- C3684 Ford Explorer
- C3684 Ford Explorer Sport Trac
- C3684 Ford F-150
- C3684 Ford F-250
- C3684 Ford F-350
- C3684 Ford Fiesta
- C3684 Ford Flex
- C3684 Ford Focus
- C3684 Ford Focus Electric
- C3684 Ford Freestar
- C3684 Ford Freestyle
- C3684 Ford Fusion
- C3684 Ford Fusion Energi
- C3684 Ford Fusion Hybrid
- C3684 Ford Fusion Plug-In Hybrid
- C3684 Ford GT
- C3684 Ford Mustang
- C3684 Ford Mustang Mach-E
- C3684 Ford Mystique
- C3684 Ford Probe
- C3684 Ford Ranger
- C3684 Ford Taurus
- C3684 Ford Taurus X
- C3684 Ford Tempo
- C3684 Ford Thunderbird
- C3684 Ford Transit
- C3684 Ford Transit Connect
- C3684 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.