U3685

U3685 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3685 Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.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 U3685 Fault Code Meaning :

Ford U3685 Symptoms :

Ford U3685 Reasons :

How To Fix Ford U3685 Trouble Code ?

Which Ford cars have the code U3685?

  • U3685 Ford Aerostar
  • U3685 Ford Bronco
  • U3685 Ford C-Max
  • U3685 Ford C-Max Energi
  • U3685 Ford C-Max Hybrid
  • U3685 Ford Contour
  • U3685 Ford Crown Victoria
  • U3685 Ford EcoSport
  • U3685 Ford Econoline
  • U3685 Ford Edge
  • U3685 Ford Escape
  • U3685 Ford Escape Hybrid
  • U3685 Ford Escort
  • U3685 Ford Everest
  • U3685 Ford Excursion
  • U3685 Ford Expedition
  • U3685 Ford Explorer
  • U3685 Ford Explorer Sport Trac
  • U3685 Ford F-150
  • U3685 Ford F-250
  • U3685 Ford F-350
  • U3685 Ford Fiesta
  • U3685 Ford Flex
  • U3685 Ford Focus
  • U3685 Ford Focus Electric
  • U3685 Ford Freestar
  • U3685 Ford Freestyle
  • U3685 Ford Fusion
  • U3685 Ford Fusion Energi
  • U3685 Ford Fusion Hybrid
  • U3685 Ford Fusion Plug-In Hybrid
  • U3685 Ford GT
  • U3685 Ford Mustang
  • U3685 Ford Mustang Mach-E
  • U3685 Ford Mystique
  • U3685 Ford Probe
  • U3685 Ford Ranger
  • U3685 Ford Taurus
  • U3685 Ford Taurus X
  • U3685 Ford Tempo
  • U3685 Ford Thunderbird
  • U3685 Ford Transit
  • U3685 Ford Transit Connect
  • U3685 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.