P21B3

P21B3 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P21B3 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 P21B3 Fault Code Meaning :

Ford P21B3 Symptoms :

Ford P21B3 Reasons :

How To Fix Ford P21B3 Trouble Code ?

Which Ford cars have the code P21B3?

  • P21B3 Ford Aerostar
  • P21B3 Ford Bronco
  • P21B3 Ford C-Max
  • P21B3 Ford C-Max Energi
  • P21B3 Ford C-Max Hybrid
  • P21B3 Ford Contour
  • P21B3 Ford Crown Victoria
  • P21B3 Ford EcoSport
  • P21B3 Ford Econoline
  • P21B3 Ford Edge
  • P21B3 Ford Escape
  • P21B3 Ford Escape Hybrid
  • P21B3 Ford Escort
  • P21B3 Ford Everest
  • P21B3 Ford Excursion
  • P21B3 Ford Expedition
  • P21B3 Ford Explorer
  • P21B3 Ford Explorer Sport Trac
  • P21B3 Ford F-150
  • P21B3 Ford F-250
  • P21B3 Ford F-350
  • P21B3 Ford Fiesta
  • P21B3 Ford Flex
  • P21B3 Ford Focus
  • P21B3 Ford Focus Electric
  • P21B3 Ford Freestar
  • P21B3 Ford Freestyle
  • P21B3 Ford Fusion
  • P21B3 Ford Fusion Energi
  • P21B3 Ford Fusion Hybrid
  • P21B3 Ford Fusion Plug-In Hybrid
  • P21B3 Ford GT
  • P21B3 Ford Mustang
  • P21B3 Ford Mustang Mach-E
  • P21B3 Ford Mystique
  • P21B3 Ford Probe
  • P21B3 Ford Ranger
  • P21B3 Ford Taurus
  • P21B3 Ford Taurus X
  • P21B3 Ford Tempo
  • P21B3 Ford Thunderbird
  • P21B3 Ford Transit
  • P21B3 Ford Transit Connect
  • P21B3 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.