P21DD

P21DD Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P21DD Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.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 P21DD Fault Code Meaning :

Ford P21DD Symptoms :

Ford P21DD Reasons :

How To Fix Ford P21DD Trouble Code ?

Which Ford cars have the code P21DD?

  • P21DD Ford Aerostar
  • P21DD Ford Bronco
  • P21DD Ford C-Max
  • P21DD Ford C-Max Energi
  • P21DD Ford C-Max Hybrid
  • P21DD Ford Contour
  • P21DD Ford Crown Victoria
  • P21DD Ford EcoSport
  • P21DD Ford Econoline
  • P21DD Ford Edge
  • P21DD Ford Escape
  • P21DD Ford Escape Hybrid
  • P21DD Ford Escort
  • P21DD Ford Everest
  • P21DD Ford Excursion
  • P21DD Ford Expedition
  • P21DD Ford Explorer
  • P21DD Ford Explorer Sport Trac
  • P21DD Ford F-150
  • P21DD Ford F-250
  • P21DD Ford F-350
  • P21DD Ford Fiesta
  • P21DD Ford Flex
  • P21DD Ford Focus
  • P21DD Ford Focus Electric
  • P21DD Ford Freestar
  • P21DD Ford Freestyle
  • P21DD Ford Fusion
  • P21DD Ford Fusion Energi
  • P21DD Ford Fusion Hybrid
  • P21DD Ford Fusion Plug-In Hybrid
  • P21DD Ford GT
  • P21DD Ford Mustang
  • P21DD Ford Mustang Mach-E
  • P21DD Ford Mystique
  • P21DD Ford Probe
  • P21DD Ford Ranger
  • P21DD Ford Taurus
  • P21DD Ford Taurus X
  • P21DD Ford Tempo
  • P21DD Ford Thunderbird
  • P21DD Ford Transit
  • P21DD Ford Transit Connect
  • P21DD 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.