C3971

C3971 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3971 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 C3971 Fault Code Meaning :

Ford C3971 Symptoms :

Ford C3971 Reasons :

How To Fix Ford C3971 Trouble Code ?

Which Ford cars have the code C3971?

  • C3971 Ford Aerostar
  • C3971 Ford Bronco
  • C3971 Ford C-Max
  • C3971 Ford C-Max Energi
  • C3971 Ford C-Max Hybrid
  • C3971 Ford Contour
  • C3971 Ford Crown Victoria
  • C3971 Ford EcoSport
  • C3971 Ford Econoline
  • C3971 Ford Edge
  • C3971 Ford Escape
  • C3971 Ford Escape Hybrid
  • C3971 Ford Escort
  • C3971 Ford Everest
  • C3971 Ford Excursion
  • C3971 Ford Expedition
  • C3971 Ford Explorer
  • C3971 Ford Explorer Sport Trac
  • C3971 Ford F-150
  • C3971 Ford F-250
  • C3971 Ford F-350
  • C3971 Ford Fiesta
  • C3971 Ford Flex
  • C3971 Ford Focus
  • C3971 Ford Focus Electric
  • C3971 Ford Freestar
  • C3971 Ford Freestyle
  • C3971 Ford Fusion
  • C3971 Ford Fusion Energi
  • C3971 Ford Fusion Hybrid
  • C3971 Ford Fusion Plug-In Hybrid
  • C3971 Ford GT
  • C3971 Ford Mustang
  • C3971 Ford Mustang Mach-E
  • C3971 Ford Mystique
  • C3971 Ford Probe
  • C3971 Ford Ranger
  • C3971 Ford Taurus
  • C3971 Ford Taurus X
  • C3971 Ford Tempo
  • C3971 Ford Thunderbird
  • C3971 Ford Transit
  • C3971 Ford Transit Connect
  • C3971 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.