P3966

P3966 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3966 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.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.

The BHM measures the current on this circuit when the starter output is commanded ON. This fault indicates the magnetic switch or the wiring between the BHM and the magnetic switch is open circuit.

Ford P3966 Fault Code Meaning :

Ford P3966 Symptoms :

Ford P3966 Reasons :

How To Fix Ford P3966 Trouble Code ?

Which Ford cars have the code P3966?

  • P3966 Ford Aerostar
  • P3966 Ford Bronco
  • P3966 Ford C-Max
  • P3966 Ford C-Max Energi
  • P3966 Ford C-Max Hybrid
  • P3966 Ford Contour
  • P3966 Ford Crown Victoria
  • P3966 Ford EcoSport
  • P3966 Ford Econoline
  • P3966 Ford Edge
  • P3966 Ford Escape
  • P3966 Ford Escape Hybrid
  • P3966 Ford Escort
  • P3966 Ford Everest
  • P3966 Ford Excursion
  • P3966 Ford Expedition
  • P3966 Ford Explorer
  • P3966 Ford Explorer Sport Trac
  • P3966 Ford F-150
  • P3966 Ford F-250
  • P3966 Ford F-350
  • P3966 Ford Fiesta
  • P3966 Ford Flex
  • P3966 Ford Focus
  • P3966 Ford Focus Electric
  • P3966 Ford Freestar
  • P3966 Ford Freestyle
  • P3966 Ford Fusion
  • P3966 Ford Fusion Energi
  • P3966 Ford Fusion Hybrid
  • P3966 Ford Fusion Plug-In Hybrid
  • P3966 Ford GT
  • P3966 Ford Mustang
  • P3966 Ford Mustang Mach-E
  • P3966 Ford Mystique
  • P3966 Ford Probe
  • P3966 Ford Ranger
  • P3966 Ford Taurus
  • P3966 Ford Taurus X
  • P3966 Ford Tempo
  • P3966 Ford Thunderbird
  • P3966 Ford Transit
  • P3966 Ford Transit Connect
  • P3966 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.