P8B21

P8B21 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P8B21 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 top-of-clutch switch and bottom-of-clutch switch are both measured as closed at the same time. Troubleshoot for clutch switch shorted, or for a wiring fault between the clutch switch and the BHM.

Ford P8B21 Fault Code Meaning :

Ford P8B21 Symptoms :

Ford P8B21 Reasons :

How To Fix Ford P8B21 Trouble Code ?

Which Ford cars have the code P8B21?

  • P8B21 Ford Aerostar
  • P8B21 Ford Bronco
  • P8B21 Ford C-Max
  • P8B21 Ford C-Max Energi
  • P8B21 Ford C-Max Hybrid
  • P8B21 Ford Contour
  • P8B21 Ford Crown Victoria
  • P8B21 Ford EcoSport
  • P8B21 Ford Econoline
  • P8B21 Ford Edge
  • P8B21 Ford Escape
  • P8B21 Ford Escape Hybrid
  • P8B21 Ford Escort
  • P8B21 Ford Everest
  • P8B21 Ford Excursion
  • P8B21 Ford Expedition
  • P8B21 Ford Explorer
  • P8B21 Ford Explorer Sport Trac
  • P8B21 Ford F-150
  • P8B21 Ford F-250
  • P8B21 Ford F-350
  • P8B21 Ford Fiesta
  • P8B21 Ford Flex
  • P8B21 Ford Focus
  • P8B21 Ford Focus Electric
  • P8B21 Ford Freestar
  • P8B21 Ford Freestyle
  • P8B21 Ford Fusion
  • P8B21 Ford Fusion Energi
  • P8B21 Ford Fusion Hybrid
  • P8B21 Ford Fusion Plug-In Hybrid
  • P8B21 Ford GT
  • P8B21 Ford Mustang
  • P8B21 Ford Mustang Mach-E
  • P8B21 Ford Mystique
  • P8B21 Ford Probe
  • P8B21 Ford Ranger
  • P8B21 Ford Taurus
  • P8B21 Ford Taurus X
  • P8B21 Ford Tempo
  • P8B21 Ford Thunderbird
  • P8B21 Ford Transit
  • P8B21 Ford Transit Connect
  • P8B21 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.