C3891
C3891 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.C3891 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 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 disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.
Ford C3891 Fault Code Meaning :
Ford C3891 Symptoms :
Ford C3891 Reasons :
How To Fix Ford C3891 Trouble Code ?
Which Ford cars have the code C3891?
- C3891 Ford Aerostar
- C3891 Ford Bronco
- C3891 Ford C-Max
- C3891 Ford C-Max Energi
- C3891 Ford C-Max Hybrid
- C3891 Ford Contour
- C3891 Ford Crown Victoria
- C3891 Ford EcoSport
- C3891 Ford Econoline
- C3891 Ford Edge
- C3891 Ford Escape
- C3891 Ford Escape Hybrid
- C3891 Ford Escort
- C3891 Ford Everest
- C3891 Ford Excursion
- C3891 Ford Expedition
- C3891 Ford Explorer
- C3891 Ford Explorer Sport Trac
- C3891 Ford F-150
- C3891 Ford F-250
- C3891 Ford F-350
- C3891 Ford Fiesta
- C3891 Ford Flex
- C3891 Ford Focus
- C3891 Ford Focus Electric
- C3891 Ford Freestar
- C3891 Ford Freestyle
- C3891 Ford Fusion
- C3891 Ford Fusion Energi
- C3891 Ford Fusion Hybrid
- C3891 Ford Fusion Plug-In Hybrid
- C3891 Ford GT
- C3891 Ford Mustang
- C3891 Ford Mustang Mach-E
- C3891 Ford Mystique
- C3891 Ford Probe
- C3891 Ford Ranger
- C3891 Ford Taurus
- C3891 Ford Taurus X
- C3891 Ford Tempo
- C3891 Ford Thunderbird
- C3891 Ford Transit
- C3891 Ford Transit Connect
- C3891 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.