U3691

U3691 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3691 Diagnosis

The PTO 1 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for PTO 2 air solenoid fault, and for air pressure switch short circuit fault.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 FF.

The End of Frame air output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for an End of Frame air solenoid fault, and for an air pressure switch short circuit fault.

Ford U3691 Fault Code Meaning :

Ford U3691 Symptoms :

Ford U3691 Reasons :

How To Fix Ford U3691 Trouble Code ?

Which Ford cars have the code U3691?

  • U3691 Ford Aerostar
  • U3691 Ford Bronco
  • U3691 Ford C-Max
  • U3691 Ford C-Max Energi
  • U3691 Ford C-Max Hybrid
  • U3691 Ford Contour
  • U3691 Ford Crown Victoria
  • U3691 Ford EcoSport
  • U3691 Ford Econoline
  • U3691 Ford Edge
  • U3691 Ford Escape
  • U3691 Ford Escape Hybrid
  • U3691 Ford Escort
  • U3691 Ford Everest
  • U3691 Ford Excursion
  • U3691 Ford Expedition
  • U3691 Ford Explorer
  • U3691 Ford Explorer Sport Trac
  • U3691 Ford F-150
  • U3691 Ford F-250
  • U3691 Ford F-350
  • U3691 Ford Fiesta
  • U3691 Ford Flex
  • U3691 Ford Focus
  • U3691 Ford Focus Electric
  • U3691 Ford Freestar
  • U3691 Ford Freestyle
  • U3691 Ford Fusion
  • U3691 Ford Fusion Energi
  • U3691 Ford Fusion Hybrid
  • U3691 Ford Fusion Plug-In Hybrid
  • U3691 Ford GT
  • U3691 Ford Mustang
  • U3691 Ford Mustang Mach-E
  • U3691 Ford Mystique
  • U3691 Ford Probe
  • U3691 Ford Ranger
  • U3691 Ford Taurus
  • U3691 Ford Taurus X
  • U3691 Ford Tempo
  • U3691 Ford Thunderbird
  • U3691 Ford Transit
  • U3691 Ford Transit Connect
  • U3691 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.