C3866

C3866 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3866 Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.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.

When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford C3866 Fault Code Meaning :

Ford C3866 Symptoms :

Ford C3866 Reasons :

How To Fix Ford C3866 Trouble Code ?

Which Ford cars have the code C3866?

  • C3866 Ford Aerostar
  • C3866 Ford Bronco
  • C3866 Ford C-Max
  • C3866 Ford C-Max Energi
  • C3866 Ford C-Max Hybrid
  • C3866 Ford Contour
  • C3866 Ford Crown Victoria
  • C3866 Ford EcoSport
  • C3866 Ford Econoline
  • C3866 Ford Edge
  • C3866 Ford Escape
  • C3866 Ford Escape Hybrid
  • C3866 Ford Escort
  • C3866 Ford Everest
  • C3866 Ford Excursion
  • C3866 Ford Expedition
  • C3866 Ford Explorer
  • C3866 Ford Explorer Sport Trac
  • C3866 Ford F-150
  • C3866 Ford F-250
  • C3866 Ford F-350
  • C3866 Ford Fiesta
  • C3866 Ford Flex
  • C3866 Ford Focus
  • C3866 Ford Focus Electric
  • C3866 Ford Freestar
  • C3866 Ford Freestyle
  • C3866 Ford Fusion
  • C3866 Ford Fusion Energi
  • C3866 Ford Fusion Hybrid
  • C3866 Ford Fusion Plug-In Hybrid
  • C3866 Ford GT
  • C3866 Ford Mustang
  • C3866 Ford Mustang Mach-E
  • C3866 Ford Mystique
  • C3866 Ford Probe
  • C3866 Ford Ranger
  • C3866 Ford Taurus
  • C3866 Ford Taurus X
  • C3866 Ford Tempo
  • C3866 Ford Thunderbird
  • C3866 Ford Transit
  • C3866 Ford Transit Connect
  • C3866 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.