P2B21

P2B21 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P2B21 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 position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.

A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.

Ford P2B21 Fault Code Meaning :

Ford P2B21 Symptoms :

Ford P2B21 Reasons :

How To Fix Ford P2B21 Trouble Code ?

Which Ford cars have the code P2B21?

  • P2B21 Ford Aerostar
  • P2B21 Ford Bronco
  • P2B21 Ford C-Max
  • P2B21 Ford C-Max Energi
  • P2B21 Ford C-Max Hybrid
  • P2B21 Ford Contour
  • P2B21 Ford Crown Victoria
  • P2B21 Ford EcoSport
  • P2B21 Ford Econoline
  • P2B21 Ford Edge
  • P2B21 Ford Escape
  • P2B21 Ford Escape Hybrid
  • P2B21 Ford Escort
  • P2B21 Ford Everest
  • P2B21 Ford Excursion
  • P2B21 Ford Expedition
  • P2B21 Ford Explorer
  • P2B21 Ford Explorer Sport Trac
  • P2B21 Ford F-150
  • P2B21 Ford F-250
  • P2B21 Ford F-350
  • P2B21 Ford Fiesta
  • P2B21 Ford Flex
  • P2B21 Ford Focus
  • P2B21 Ford Focus Electric
  • P2B21 Ford Freestar
  • P2B21 Ford Freestyle
  • P2B21 Ford Fusion
  • P2B21 Ford Fusion Energi
  • P2B21 Ford Fusion Hybrid
  • P2B21 Ford Fusion Plug-In Hybrid
  • P2B21 Ford GT
  • P2B21 Ford Mustang
  • P2B21 Ford Mustang Mach-E
  • P2B21 Ford Mystique
  • P2B21 Ford Probe
  • P2B21 Ford Ranger
  • P2B21 Ford Taurus
  • P2B21 Ford Taurus X
  • P2B21 Ford Tempo
  • P2B21 Ford Thunderbird
  • P2B21 Ford Transit
  • P2B21 Ford Transit Connect
  • P2B21 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.