P21C9

P21C9 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P21C9 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 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 disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford P21C9 Fault Code Meaning :

Ford P21C9 Symptoms :

Ford P21C9 Reasons :

How To Fix Ford P21C9 Trouble Code ?

Which Ford cars have the code P21C9?

  • P21C9 Ford Aerostar
  • P21C9 Ford Bronco
  • P21C9 Ford C-Max
  • P21C9 Ford C-Max Energi
  • P21C9 Ford C-Max Hybrid
  • P21C9 Ford Contour
  • P21C9 Ford Crown Victoria
  • P21C9 Ford EcoSport
  • P21C9 Ford Econoline
  • P21C9 Ford Edge
  • P21C9 Ford Escape
  • P21C9 Ford Escape Hybrid
  • P21C9 Ford Escort
  • P21C9 Ford Everest
  • P21C9 Ford Excursion
  • P21C9 Ford Expedition
  • P21C9 Ford Explorer
  • P21C9 Ford Explorer Sport Trac
  • P21C9 Ford F-150
  • P21C9 Ford F-250
  • P21C9 Ford F-350
  • P21C9 Ford Fiesta
  • P21C9 Ford Flex
  • P21C9 Ford Focus
  • P21C9 Ford Focus Electric
  • P21C9 Ford Freestar
  • P21C9 Ford Freestyle
  • P21C9 Ford Fusion
  • P21C9 Ford Fusion Energi
  • P21C9 Ford Fusion Hybrid
  • P21C9 Ford Fusion Plug-In Hybrid
  • P21C9 Ford GT
  • P21C9 Ford Mustang
  • P21C9 Ford Mustang Mach-E
  • P21C9 Ford Mystique
  • P21C9 Ford Probe
  • P21C9 Ford Ranger
  • P21C9 Ford Taurus
  • P21C9 Ford Taurus X
  • P21C9 Ford Tempo
  • P21C9 Ford Thunderbird
  • P21C9 Ford Transit
  • P21C9 Ford Transit Connect
  • P21C9 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.