U121D

U121D Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U121D Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

The suspension proportioning output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for suspension proportioning air solenoid fault, and for air pressure switch short circuit fault.

Ford U121D Fault Code Meaning :

Ford U121D Symptoms :

Ford U121D Reasons :

How To Fix Ford U121D Trouble Code ?

Which Ford cars have the code U121D?

  • U121D Ford Aerostar
  • U121D Ford Bronco
  • U121D Ford C-Max
  • U121D Ford C-Max Energi
  • U121D Ford C-Max Hybrid
  • U121D Ford Contour
  • U121D Ford Crown Victoria
  • U121D Ford EcoSport
  • U121D Ford Econoline
  • U121D Ford Edge
  • U121D Ford Escape
  • U121D Ford Escape Hybrid
  • U121D Ford Escort
  • U121D Ford Everest
  • U121D Ford Excursion
  • U121D Ford Expedition
  • U121D Ford Explorer
  • U121D Ford Explorer Sport Trac
  • U121D Ford F-150
  • U121D Ford F-250
  • U121D Ford F-350
  • U121D Ford Fiesta
  • U121D Ford Flex
  • U121D Ford Focus
  • U121D Ford Focus Electric
  • U121D Ford Freestar
  • U121D Ford Freestyle
  • U121D Ford Fusion
  • U121D Ford Fusion Energi
  • U121D Ford Fusion Hybrid
  • U121D Ford Fusion Plug-In Hybrid
  • U121D Ford GT
  • U121D Ford Mustang
  • U121D Ford Mustang Mach-E
  • U121D Ford Mystique
  • U121D Ford Probe
  • U121D Ford Ranger
  • U121D Ford Taurus
  • U121D Ford Taurus X
  • U121D Ford Tempo
  • U121D Ford Thunderbird
  • U121D Ford Transit
  • U121D Ford Transit Connect
  • U121D 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.