C3966

C3966 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3966 Diagnosis

The output circuits that are powered by VBAT2 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

This circuit connects to the CHM as an input at connector J3,P. The CHM passes the signal through to power the tail lamps and marker lamps from connector C2 pin G and also from connector C1 pins D, E, and F.

Ford C3966 Fault Code Meaning :

Ford C3966 Symptoms :

Ford C3966 Reasons :

How To Fix Ford C3966 Trouble Code ?

Which Ford cars have the code C3966?

  • C3966 Ford Aerostar
  • C3966 Ford Bronco
  • C3966 Ford C-Max
  • C3966 Ford C-Max Energi
  • C3966 Ford C-Max Hybrid
  • C3966 Ford Contour
  • C3966 Ford Crown Victoria
  • C3966 Ford EcoSport
  • C3966 Ford Econoline
  • C3966 Ford Edge
  • C3966 Ford Escape
  • C3966 Ford Escape Hybrid
  • C3966 Ford Escort
  • C3966 Ford Everest
  • C3966 Ford Excursion
  • C3966 Ford Expedition
  • C3966 Ford Explorer
  • C3966 Ford Explorer Sport Trac
  • C3966 Ford F-150
  • C3966 Ford F-250
  • C3966 Ford F-350
  • C3966 Ford Fiesta
  • C3966 Ford Flex
  • C3966 Ford Focus
  • C3966 Ford Focus Electric
  • C3966 Ford Freestar
  • C3966 Ford Freestyle
  • C3966 Ford Fusion
  • C3966 Ford Fusion Energi
  • C3966 Ford Fusion Hybrid
  • C3966 Ford Fusion Plug-In Hybrid
  • C3966 Ford GT
  • C3966 Ford Mustang
  • C3966 Ford Mustang Mach-E
  • C3966 Ford Mystique
  • C3966 Ford Probe
  • C3966 Ford Ranger
  • C3966 Ford Taurus
  • C3966 Ford Taurus X
  • C3966 Ford Tempo
  • C3966 Ford Thunderbird
  • C3966 Ford Transit
  • C3966 Ford Transit Connect
  • C3966 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.