C1866

C1866 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C1866 Diagnosis

The output circuits that are powered by VBAT2 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. 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 FF.

The End of Frame air output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for an End of Frame air solenoid fault, and for an air pressure switch short circuit fault.

Ford C1866 Fault Code Meaning :

Ford C1866 Symptoms :

Ford C1866 Reasons :

How To Fix Ford C1866 Trouble Code ?

Which Ford cars have the code C1866?

  • C1866 Ford Aerostar
  • C1866 Ford Bronco
  • C1866 Ford C-Max
  • C1866 Ford C-Max Energi
  • C1866 Ford C-Max Hybrid
  • C1866 Ford Contour
  • C1866 Ford Crown Victoria
  • C1866 Ford EcoSport
  • C1866 Ford Econoline
  • C1866 Ford Edge
  • C1866 Ford Escape
  • C1866 Ford Escape Hybrid
  • C1866 Ford Escort
  • C1866 Ford Everest
  • C1866 Ford Excursion
  • C1866 Ford Expedition
  • C1866 Ford Explorer
  • C1866 Ford Explorer Sport Trac
  • C1866 Ford F-150
  • C1866 Ford F-250
  • C1866 Ford F-350
  • C1866 Ford Fiesta
  • C1866 Ford Flex
  • C1866 Ford Focus
  • C1866 Ford Focus Electric
  • C1866 Ford Freestar
  • C1866 Ford Freestyle
  • C1866 Ford Fusion
  • C1866 Ford Fusion Energi
  • C1866 Ford Fusion Hybrid
  • C1866 Ford Fusion Plug-In Hybrid
  • C1866 Ford GT
  • C1866 Ford Mustang
  • C1866 Ford Mustang Mach-E
  • C1866 Ford Mystique
  • C1866 Ford Probe
  • C1866 Ford Ranger
  • C1866 Ford Taurus
  • C1866 Ford Taurus X
  • C1866 Ford Tempo
  • C1866 Ford Thunderbird
  • C1866 Ford Transit
  • C1866 Ford Transit Connect
  • C1866 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.