U3688

U3688 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3688 Diagnosis

The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.The position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.

Engine starting is disabled and other optional functions may be interrupted until the fault is corrected and the ignition switch is cycled.

Ford U3688 Fault Code Meaning :

Ford U3688 Symptoms :

Ford U3688 Reasons :

How To Fix Ford U3688 Trouble Code ?

Which Ford cars have the code U3688?

  • U3688 Ford Aerostar
  • U3688 Ford Bronco
  • U3688 Ford C-Max
  • U3688 Ford C-Max Energi
  • U3688 Ford C-Max Hybrid
  • U3688 Ford Contour
  • U3688 Ford Crown Victoria
  • U3688 Ford EcoSport
  • U3688 Ford Econoline
  • U3688 Ford Edge
  • U3688 Ford Escape
  • U3688 Ford Escape Hybrid
  • U3688 Ford Escort
  • U3688 Ford Everest
  • U3688 Ford Excursion
  • U3688 Ford Expedition
  • U3688 Ford Explorer
  • U3688 Ford Explorer Sport Trac
  • U3688 Ford F-150
  • U3688 Ford F-250
  • U3688 Ford F-350
  • U3688 Ford Fiesta
  • U3688 Ford Flex
  • U3688 Ford Focus
  • U3688 Ford Focus Electric
  • U3688 Ford Freestar
  • U3688 Ford Freestyle
  • U3688 Ford Fusion
  • U3688 Ford Fusion Energi
  • U3688 Ford Fusion Hybrid
  • U3688 Ford Fusion Plug-In Hybrid
  • U3688 Ford GT
  • U3688 Ford Mustang
  • U3688 Ford Mustang Mach-E
  • U3688 Ford Mystique
  • U3688 Ford Probe
  • U3688 Ford Ranger
  • U3688 Ford Taurus
  • U3688 Ford Taurus X
  • U3688 Ford Tempo
  • U3688 Ford Thunderbird
  • U3688 Ford Transit
  • U3688 Ford Transit Connect
  • U3688 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.