P21F9
P21F9 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.P21F9 Diagnosis
The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 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 P21F9 Fault Code Meaning :
Ford P21F9 Symptoms :
Ford P21F9 Reasons :
How To Fix Ford P21F9 Trouble Code ?
Which Ford cars have the code P21F9?
- P21F9 Ford Aerostar
- P21F9 Ford Bronco
- P21F9 Ford C-Max
- P21F9 Ford C-Max Energi
- P21F9 Ford C-Max Hybrid
- P21F9 Ford Contour
- P21F9 Ford Crown Victoria
- P21F9 Ford EcoSport
- P21F9 Ford Econoline
- P21F9 Ford Edge
- P21F9 Ford Escape
- P21F9 Ford Escape Hybrid
- P21F9 Ford Escort
- P21F9 Ford Everest
- P21F9 Ford Excursion
- P21F9 Ford Expedition
- P21F9 Ford Explorer
- P21F9 Ford Explorer Sport Trac
- P21F9 Ford F-150
- P21F9 Ford F-250
- P21F9 Ford F-350
- P21F9 Ford Fiesta
- P21F9 Ford Flex
- P21F9 Ford Focus
- P21F9 Ford Focus Electric
- P21F9 Ford Freestar
- P21F9 Ford Freestyle
- P21F9 Ford Fusion
- P21F9 Ford Fusion Energi
- P21F9 Ford Fusion Hybrid
- P21F9 Ford Fusion Plug-In Hybrid
- P21F9 Ford GT
- P21F9 Ford Mustang
- P21F9 Ford Mustang Mach-E
- P21F9 Ford Mystique
- P21F9 Ford Probe
- P21F9 Ford Ranger
- P21F9 Ford Taurus
- P21F9 Ford Taurus X
- P21F9 Ford Tempo
- P21F9 Ford Thunderbird
- P21F9 Ford Transit
- P21F9 Ford Transit Connect
- P21F9 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.