P8D21
P8D21 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.P8D21 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.Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.
This circuit connects to the CHM as an input at connector J3,P. The CHM passes the signal through to power the tail lamps and marker lamps from connector C2 pin G and also from connector C1 pins D, E, and F.
Ford P8D21 Fault Code Meaning :
Ford P8D21 Symptoms :
Ford P8D21 Reasons :
How To Fix Ford P8D21 Trouble Code ?
Which Ford cars have the code P8D21?
- P8D21 Ford Aerostar
- P8D21 Ford Bronco
- P8D21 Ford C-Max
- P8D21 Ford C-Max Energi
- P8D21 Ford C-Max Hybrid
- P8D21 Ford Contour
- P8D21 Ford Crown Victoria
- P8D21 Ford EcoSport
- P8D21 Ford Econoline
- P8D21 Ford Edge
- P8D21 Ford Escape
- P8D21 Ford Escape Hybrid
- P8D21 Ford Escort
- P8D21 Ford Everest
- P8D21 Ford Excursion
- P8D21 Ford Expedition
- P8D21 Ford Explorer
- P8D21 Ford Explorer Sport Trac
- P8D21 Ford F-150
- P8D21 Ford F-250
- P8D21 Ford F-350
- P8D21 Ford Fiesta
- P8D21 Ford Flex
- P8D21 Ford Focus
- P8D21 Ford Focus Electric
- P8D21 Ford Freestar
- P8D21 Ford Freestyle
- P8D21 Ford Fusion
- P8D21 Ford Fusion Energi
- P8D21 Ford Fusion Hybrid
- P8D21 Ford Fusion Plug-In Hybrid
- P8D21 Ford GT
- P8D21 Ford Mustang
- P8D21 Ford Mustang Mach-E
- P8D21 Ford Mystique
- P8D21 Ford Probe
- P8D21 Ford Ranger
- P8D21 Ford Taurus
- P8D21 Ford Taurus X
- P8D21 Ford Tempo
- P8D21 Ford Thunderbird
- P8D21 Ford Transit
- P8D21 Ford Transit Connect
- P8D21 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.