P21F8

P21F8 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P21F8 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 FF.

The BHM drives the 5 cab overhead clearance and ID lamps from connector B5 pin C on circuit 46. All other marker and tail lamps are driven from BHM connector B1,K on circuit 23. This circuit connects to the CHM as an input at connector J3,P.

Ford P21F8 Fault Code Meaning :

Ford P21F8 Symptoms :

Ford P21F8 Reasons :

How To Fix Ford P21F8 Trouble Code ?

Which Ford cars have the code P21F8?

  • P21F8 Ford Aerostar
  • P21F8 Ford Bronco
  • P21F8 Ford C-Max
  • P21F8 Ford C-Max Energi
  • P21F8 Ford C-Max Hybrid
  • P21F8 Ford Contour
  • P21F8 Ford Crown Victoria
  • P21F8 Ford EcoSport
  • P21F8 Ford Econoline
  • P21F8 Ford Edge
  • P21F8 Ford Escape
  • P21F8 Ford Escape Hybrid
  • P21F8 Ford Escort
  • P21F8 Ford Everest
  • P21F8 Ford Excursion
  • P21F8 Ford Expedition
  • P21F8 Ford Explorer
  • P21F8 Ford Explorer Sport Trac
  • P21F8 Ford F-150
  • P21F8 Ford F-250
  • P21F8 Ford F-350
  • P21F8 Ford Fiesta
  • P21F8 Ford Flex
  • P21F8 Ford Focus
  • P21F8 Ford Focus Electric
  • P21F8 Ford Freestar
  • P21F8 Ford Freestyle
  • P21F8 Ford Fusion
  • P21F8 Ford Fusion Energi
  • P21F8 Ford Fusion Hybrid
  • P21F8 Ford Fusion Plug-In Hybrid
  • P21F8 Ford GT
  • P21F8 Ford Mustang
  • P21F8 Ford Mustang Mach-E
  • P21F8 Ford Mystique
  • P21F8 Ford Probe
  • P21F8 Ford Ranger
  • P21F8 Ford Taurus
  • P21F8 Ford Taurus X
  • P21F8 Ford Tempo
  • P21F8 Ford Thunderbird
  • P21F8 Ford Transit
  • P21F8 Ford Transit Connect
  • P21F8 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.