U3681

U3681 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3681 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 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.

A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.

Ford U3681 Fault Code Meaning :

Ford U3681 Symptoms :

Ford U3681 Reasons :

How To Fix Ford U3681 Trouble Code ?

Which Ford cars have the code U3681?

  • U3681 Ford Aerostar
  • U3681 Ford Bronco
  • U3681 Ford C-Max
  • U3681 Ford C-Max Energi
  • U3681 Ford C-Max Hybrid
  • U3681 Ford Contour
  • U3681 Ford Crown Victoria
  • U3681 Ford EcoSport
  • U3681 Ford Econoline
  • U3681 Ford Edge
  • U3681 Ford Escape
  • U3681 Ford Escape Hybrid
  • U3681 Ford Escort
  • U3681 Ford Everest
  • U3681 Ford Excursion
  • U3681 Ford Expedition
  • U3681 Ford Explorer
  • U3681 Ford Explorer Sport Trac
  • U3681 Ford F-150
  • U3681 Ford F-250
  • U3681 Ford F-350
  • U3681 Ford Fiesta
  • U3681 Ford Flex
  • U3681 Ford Focus
  • U3681 Ford Focus Electric
  • U3681 Ford Freestar
  • U3681 Ford Freestyle
  • U3681 Ford Fusion
  • U3681 Ford Fusion Energi
  • U3681 Ford Fusion Hybrid
  • U3681 Ford Fusion Plug-In Hybrid
  • U3681 Ford GT
  • U3681 Ford Mustang
  • U3681 Ford Mustang Mach-E
  • U3681 Ford Mystique
  • U3681 Ford Probe
  • U3681 Ford Ranger
  • U3681 Ford Taurus
  • U3681 Ford Taurus X
  • U3681 Ford Tempo
  • U3681 Ford Thunderbird
  • U3681 Ford Transit
  • U3681 Ford Transit Connect
  • U3681 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.