U3981

U3981 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3981 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 top-of-clutch switch and bottom-of-clutch switch are both measured as closed at the same time. Troubleshoot for clutch switch shorted, or for a wiring fault between the clutch switch and the BHM.

Ford U3981 Fault Code Meaning :

Ford U3981 Symptoms :

Ford U3981 Reasons :

How To Fix Ford U3981 Trouble Code ?

Which Ford cars have the code U3981?

  • U3981 Ford Aerostar
  • U3981 Ford Bronco
  • U3981 Ford C-Max
  • U3981 Ford C-Max Energi
  • U3981 Ford C-Max Hybrid
  • U3981 Ford Contour
  • U3981 Ford Crown Victoria
  • U3981 Ford EcoSport
  • U3981 Ford Econoline
  • U3981 Ford Edge
  • U3981 Ford Escape
  • U3981 Ford Escape Hybrid
  • U3981 Ford Escort
  • U3981 Ford Everest
  • U3981 Ford Excursion
  • U3981 Ford Expedition
  • U3981 Ford Explorer
  • U3981 Ford Explorer Sport Trac
  • U3981 Ford F-150
  • U3981 Ford F-250
  • U3981 Ford F-350
  • U3981 Ford Fiesta
  • U3981 Ford Flex
  • U3981 Ford Focus
  • U3981 Ford Focus Electric
  • U3981 Ford Freestar
  • U3981 Ford Freestyle
  • U3981 Ford Fusion
  • U3981 Ford Fusion Energi
  • U3981 Ford Fusion Hybrid
  • U3981 Ford Fusion Plug-In Hybrid
  • U3981 Ford GT
  • U3981 Ford Mustang
  • U3981 Ford Mustang Mach-E
  • U3981 Ford Mystique
  • U3981 Ford Probe
  • U3981 Ford Ranger
  • U3981 Ford Taurus
  • U3981 Ford Taurus X
  • U3981 Ford Tempo
  • U3981 Ford Thunderbird
  • U3981 Ford Transit
  • U3981 Ford Transit Connect
  • U3981 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.