U1121

U1121 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U1121 Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.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 U1121 Fault Code Meaning :

Ford U1121 Symptoms :

Ford U1121 Reasons :

How To Fix Ford U1121 Trouble Code ?

Which Ford cars have the code U1121?

  • U1121 Ford Aerostar
  • U1121 Ford Bronco
  • U1121 Ford C-Max
  • U1121 Ford C-Max Energi
  • U1121 Ford C-Max Hybrid
  • U1121 Ford Contour
  • U1121 Ford Crown Victoria
  • U1121 Ford EcoSport
  • U1121 Ford Econoline
  • U1121 Ford Edge
  • U1121 Ford Escape
  • U1121 Ford Escape Hybrid
  • U1121 Ford Escort
  • U1121 Ford Everest
  • U1121 Ford Excursion
  • U1121 Ford Expedition
  • U1121 Ford Explorer
  • U1121 Ford Explorer Sport Trac
  • U1121 Ford F-150
  • U1121 Ford F-250
  • U1121 Ford F-350
  • U1121 Ford Fiesta
  • U1121 Ford Flex
  • U1121 Ford Focus
  • U1121 Ford Focus Electric
  • U1121 Ford Freestar
  • U1121 Ford Freestyle
  • U1121 Ford Fusion
  • U1121 Ford Fusion Energi
  • U1121 Ford Fusion Hybrid
  • U1121 Ford Fusion Plug-In Hybrid
  • U1121 Ford GT
  • U1121 Ford Mustang
  • U1121 Ford Mustang Mach-E
  • U1121 Ford Mystique
  • U1121 Ford Probe
  • U1121 Ford Ranger
  • U1121 Ford Taurus
  • U1121 Ford Taurus X
  • U1121 Ford Tempo
  • U1121 Ford Thunderbird
  • U1121 Ford Transit
  • U1121 Ford Transit Connect
  • U1121 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.