C1921

C1921 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C1921 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 C1921 Fault Code Meaning :

Ford C1921 Symptoms :

Ford C1921 Reasons :

How To Fix Ford C1921 Trouble Code ?

Which Ford cars have the code C1921?

  • C1921 Ford Aerostar
  • C1921 Ford Bronco
  • C1921 Ford C-Max
  • C1921 Ford C-Max Energi
  • C1921 Ford C-Max Hybrid
  • C1921 Ford Contour
  • C1921 Ford Crown Victoria
  • C1921 Ford EcoSport
  • C1921 Ford Econoline
  • C1921 Ford Edge
  • C1921 Ford Escape
  • C1921 Ford Escape Hybrid
  • C1921 Ford Escort
  • C1921 Ford Everest
  • C1921 Ford Excursion
  • C1921 Ford Expedition
  • C1921 Ford Explorer
  • C1921 Ford Explorer Sport Trac
  • C1921 Ford F-150
  • C1921 Ford F-250
  • C1921 Ford F-350
  • C1921 Ford Fiesta
  • C1921 Ford Flex
  • C1921 Ford Focus
  • C1921 Ford Focus Electric
  • C1921 Ford Freestar
  • C1921 Ford Freestyle
  • C1921 Ford Fusion
  • C1921 Ford Fusion Energi
  • C1921 Ford Fusion Hybrid
  • C1921 Ford Fusion Plug-In Hybrid
  • C1921 Ford GT
  • C1921 Ford Mustang
  • C1921 Ford Mustang Mach-E
  • C1921 Ford Mystique
  • C1921 Ford Probe
  • C1921 Ford Ranger
  • C1921 Ford Taurus
  • C1921 Ford Taurus X
  • C1921 Ford Tempo
  • C1921 Ford Thunderbird
  • C1921 Ford Transit
  • C1921 Ford Transit Connect
  • C1921 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.