U3666

U3666 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3666 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 OFF.

The disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford U3666 Fault Code Meaning :

Ford U3666 Symptoms :

Ford U3666 Reasons :

How To Fix Ford U3666 Trouble Code ?

Which Ford cars have the code U3666?

  • U3666 Ford Aerostar
  • U3666 Ford Bronco
  • U3666 Ford C-Max
  • U3666 Ford C-Max Energi
  • U3666 Ford C-Max Hybrid
  • U3666 Ford Contour
  • U3666 Ford Crown Victoria
  • U3666 Ford EcoSport
  • U3666 Ford Econoline
  • U3666 Ford Edge
  • U3666 Ford Escape
  • U3666 Ford Escape Hybrid
  • U3666 Ford Escort
  • U3666 Ford Everest
  • U3666 Ford Excursion
  • U3666 Ford Expedition
  • U3666 Ford Explorer
  • U3666 Ford Explorer Sport Trac
  • U3666 Ford F-150
  • U3666 Ford F-250
  • U3666 Ford F-350
  • U3666 Ford Fiesta
  • U3666 Ford Flex
  • U3666 Ford Focus
  • U3666 Ford Focus Electric
  • U3666 Ford Freestar
  • U3666 Ford Freestyle
  • U3666 Ford Fusion
  • U3666 Ford Fusion Energi
  • U3666 Ford Fusion Hybrid
  • U3666 Ford Fusion Plug-In Hybrid
  • U3666 Ford GT
  • U3666 Ford Mustang
  • U3666 Ford Mustang Mach-E
  • U3666 Ford Mystique
  • U3666 Ford Probe
  • U3666 Ford Ranger
  • U3666 Ford Taurus
  • U3666 Ford Taurus X
  • U3666 Ford Tempo
  • U3666 Ford Thunderbird
  • U3666 Ford Transit
  • U3666 Ford Transit Connect
  • U3666 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.