U2121

U2121 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U2121 Diagnosis

The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open 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 U2121 Fault Code Meaning :

Ford U2121 Symptoms :

Ford U2121 Reasons :

How To Fix Ford U2121 Trouble Code ?

Which Ford cars have the code U2121?

  • U2121 Ford Aerostar
  • U2121 Ford Bronco
  • U2121 Ford C-Max
  • U2121 Ford C-Max Energi
  • U2121 Ford C-Max Hybrid
  • U2121 Ford Contour
  • U2121 Ford Crown Victoria
  • U2121 Ford EcoSport
  • U2121 Ford Econoline
  • U2121 Ford Edge
  • U2121 Ford Escape
  • U2121 Ford Escape Hybrid
  • U2121 Ford Escort
  • U2121 Ford Everest
  • U2121 Ford Excursion
  • U2121 Ford Expedition
  • U2121 Ford Explorer
  • U2121 Ford Explorer Sport Trac
  • U2121 Ford F-150
  • U2121 Ford F-250
  • U2121 Ford F-350
  • U2121 Ford Fiesta
  • U2121 Ford Flex
  • U2121 Ford Focus
  • U2121 Ford Focus Electric
  • U2121 Ford Freestar
  • U2121 Ford Freestyle
  • U2121 Ford Fusion
  • U2121 Ford Fusion Energi
  • U2121 Ford Fusion Hybrid
  • U2121 Ford Fusion Plug-In Hybrid
  • U2121 Ford GT
  • U2121 Ford Mustang
  • U2121 Ford Mustang Mach-E
  • U2121 Ford Mystique
  • U2121 Ford Probe
  • U2121 Ford Ranger
  • U2121 Ford Taurus
  • U2121 Ford Taurus X
  • U2121 Ford Tempo
  • U2121 Ford Thunderbird
  • U2121 Ford Transit
  • U2121 Ford Transit Connect
  • U2121 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.