U3909

U3909 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U3909 Diagnosis

The output circuits that are powered by VBAT2 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

This circuit connects to the CHM as an input at connector J3,P. The CHM passes the signal through to power the tail lamps and marker lamps from connector C2 pin G and also from connector C1 pins D, E, and F.

Ford U3909 Fault Code Meaning :

Ford U3909 Symptoms :

Ford U3909 Reasons :

How To Fix Ford U3909 Trouble Code ?

Which Ford cars have the code U3909?

  • U3909 Ford Aerostar
  • U3909 Ford Bronco
  • U3909 Ford C-Max
  • U3909 Ford C-Max Energi
  • U3909 Ford C-Max Hybrid
  • U3909 Ford Contour
  • U3909 Ford Crown Victoria
  • U3909 Ford EcoSport
  • U3909 Ford Econoline
  • U3909 Ford Edge
  • U3909 Ford Escape
  • U3909 Ford Escape Hybrid
  • U3909 Ford Escort
  • U3909 Ford Everest
  • U3909 Ford Excursion
  • U3909 Ford Expedition
  • U3909 Ford Explorer
  • U3909 Ford Explorer Sport Trac
  • U3909 Ford F-150
  • U3909 Ford F-250
  • U3909 Ford F-350
  • U3909 Ford Fiesta
  • U3909 Ford Flex
  • U3909 Ford Focus
  • U3909 Ford Focus Electric
  • U3909 Ford Freestar
  • U3909 Ford Freestyle
  • U3909 Ford Fusion
  • U3909 Ford Fusion Energi
  • U3909 Ford Fusion Hybrid
  • U3909 Ford Fusion Plug-In Hybrid
  • U3909 Ford GT
  • U3909 Ford Mustang
  • U3909 Ford Mustang Mach-E
  • U3909 Ford Mystique
  • U3909 Ford Probe
  • U3909 Ford Ranger
  • U3909 Ford Taurus
  • U3909 Ford Taurus X
  • U3909 Ford Tempo
  • U3909 Ford Thunderbird
  • U3909 Ford Transit
  • U3909 Ford Transit Connect
  • U3909 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.