C0866

C0866 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C0866 Diagnosis

The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 2 air solenoid fault, and for air pressure switch short circuit fault.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 C0866 Fault Code Meaning :

Ford C0866 Symptoms :

Ford C0866 Reasons :

How To Fix Ford C0866 Trouble Code ?

Which Ford cars have the code C0866?

  • C0866 Ford Aerostar
  • C0866 Ford Bronco
  • C0866 Ford C-Max
  • C0866 Ford C-Max Energi
  • C0866 Ford C-Max Hybrid
  • C0866 Ford Contour
  • C0866 Ford Crown Victoria
  • C0866 Ford EcoSport
  • C0866 Ford Econoline
  • C0866 Ford Edge
  • C0866 Ford Escape
  • C0866 Ford Escape Hybrid
  • C0866 Ford Escort
  • C0866 Ford Everest
  • C0866 Ford Excursion
  • C0866 Ford Expedition
  • C0866 Ford Explorer
  • C0866 Ford Explorer Sport Trac
  • C0866 Ford F-150
  • C0866 Ford F-250
  • C0866 Ford F-350
  • C0866 Ford Fiesta
  • C0866 Ford Flex
  • C0866 Ford Focus
  • C0866 Ford Focus Electric
  • C0866 Ford Freestar
  • C0866 Ford Freestyle
  • C0866 Ford Fusion
  • C0866 Ford Fusion Energi
  • C0866 Ford Fusion Hybrid
  • C0866 Ford Fusion Plug-In Hybrid
  • C0866 Ford GT
  • C0866 Ford Mustang
  • C0866 Ford Mustang Mach-E
  • C0866 Ford Mystique
  • C0866 Ford Probe
  • C0866 Ford Ranger
  • C0866 Ford Taurus
  • C0866 Ford Taurus X
  • C0866 Ford Tempo
  • C0866 Ford Thunderbird
  • C0866 Ford Transit
  • C0866 Ford Transit Connect
  • C0866 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.