U3690

U3690 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3690 Diagnosis

The axle lift 2 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for axle lift 2 air solenoid fault, and for air pressure switch short circuit fault.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

The suspension proportioning output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for suspension proportioning air solenoid fault, and for air pressure switch short circuit fault.

Ford U3690 Fault Code Meaning :

Ford U3690 Symptoms :

Ford U3690 Reasons :

How To Fix Ford U3690 Trouble Code ?

Which Ford cars have the code U3690?

  • U3690 Ford Aerostar
  • U3690 Ford Bronco
  • U3690 Ford C-Max
  • U3690 Ford C-Max Energi
  • U3690 Ford C-Max Hybrid
  • U3690 Ford Contour
  • U3690 Ford Crown Victoria
  • U3690 Ford EcoSport
  • U3690 Ford Econoline
  • U3690 Ford Edge
  • U3690 Ford Escape
  • U3690 Ford Escape Hybrid
  • U3690 Ford Escort
  • U3690 Ford Everest
  • U3690 Ford Excursion
  • U3690 Ford Expedition
  • U3690 Ford Explorer
  • U3690 Ford Explorer Sport Trac
  • U3690 Ford F-150
  • U3690 Ford F-250
  • U3690 Ford F-350
  • U3690 Ford Fiesta
  • U3690 Ford Flex
  • U3690 Ford Focus
  • U3690 Ford Focus Electric
  • U3690 Ford Freestar
  • U3690 Ford Freestyle
  • U3690 Ford Fusion
  • U3690 Ford Fusion Energi
  • U3690 Ford Fusion Hybrid
  • U3690 Ford Fusion Plug-In Hybrid
  • U3690 Ford GT
  • U3690 Ford Mustang
  • U3690 Ford Mustang Mach-E
  • U3690 Ford Mystique
  • U3690 Ford Probe
  • U3690 Ford Ranger
  • U3690 Ford Taurus
  • U3690 Ford Taurus X
  • U3690 Ford Tempo
  • U3690 Ford Thunderbird
  • U3690 Ford Transit
  • U3690 Ford Transit Connect
  • U3690 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.