P21B0

P21B0 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P21B0 Diagnosis

The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open circuit fault.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

The suspension proportioning output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for suspension proportioning air solenoid fault, and for air pressure switch short circuit fault.

Ford P21B0 Fault Code Meaning :

Ford P21B0 Symptoms :

Ford P21B0 Reasons :

How To Fix Ford P21B0 Trouble Code ?

Which Ford cars have the code P21B0?

  • P21B0 Ford Aerostar
  • P21B0 Ford Bronco
  • P21B0 Ford C-Max
  • P21B0 Ford C-Max Energi
  • P21B0 Ford C-Max Hybrid
  • P21B0 Ford Contour
  • P21B0 Ford Crown Victoria
  • P21B0 Ford EcoSport
  • P21B0 Ford Econoline
  • P21B0 Ford Edge
  • P21B0 Ford Escape
  • P21B0 Ford Escape Hybrid
  • P21B0 Ford Escort
  • P21B0 Ford Everest
  • P21B0 Ford Excursion
  • P21B0 Ford Expedition
  • P21B0 Ford Explorer
  • P21B0 Ford Explorer Sport Trac
  • P21B0 Ford F-150
  • P21B0 Ford F-250
  • P21B0 Ford F-350
  • P21B0 Ford Fiesta
  • P21B0 Ford Flex
  • P21B0 Ford Focus
  • P21B0 Ford Focus Electric
  • P21B0 Ford Freestar
  • P21B0 Ford Freestyle
  • P21B0 Ford Fusion
  • P21B0 Ford Fusion Energi
  • P21B0 Ford Fusion Hybrid
  • P21B0 Ford Fusion Plug-In Hybrid
  • P21B0 Ford GT
  • P21B0 Ford Mustang
  • P21B0 Ford Mustang Mach-E
  • P21B0 Ford Mystique
  • P21B0 Ford Probe
  • P21B0 Ford Ranger
  • P21B0 Ford Taurus
  • P21B0 Ford Taurus X
  • P21B0 Ford Tempo
  • P21B0 Ford Thunderbird
  • P21B0 Ford Transit
  • P21B0 Ford Transit Connect
  • P21B0 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.