U21U0

U21U0 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U21U0 Diagnosis

This fault indicates that the circuit is drawing more current than it is designed to supply, and possibly there is a wiring fault shorting this circuit to ground. The fault remains active until the ignition is turned ON when the fault is no longer present.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 U21U0 Fault Code Meaning :

Ford U21U0 Symptoms :

Ford U21U0 Reasons :

How To Fix Ford U21U0 Trouble Code ?

Which Ford cars have the code U21U0?

  • U21U0 Ford Aerostar
  • U21U0 Ford Bronco
  • U21U0 Ford C-Max
  • U21U0 Ford C-Max Energi
  • U21U0 Ford C-Max Hybrid
  • U21U0 Ford Contour
  • U21U0 Ford Crown Victoria
  • U21U0 Ford EcoSport
  • U21U0 Ford Econoline
  • U21U0 Ford Edge
  • U21U0 Ford Escape
  • U21U0 Ford Escape Hybrid
  • U21U0 Ford Escort
  • U21U0 Ford Everest
  • U21U0 Ford Excursion
  • U21U0 Ford Expedition
  • U21U0 Ford Explorer
  • U21U0 Ford Explorer Sport Trac
  • U21U0 Ford F-150
  • U21U0 Ford F-250
  • U21U0 Ford F-350
  • U21U0 Ford Fiesta
  • U21U0 Ford Flex
  • U21U0 Ford Focus
  • U21U0 Ford Focus Electric
  • U21U0 Ford Freestar
  • U21U0 Ford Freestyle
  • U21U0 Ford Fusion
  • U21U0 Ford Fusion Energi
  • U21U0 Ford Fusion Hybrid
  • U21U0 Ford Fusion Plug-In Hybrid
  • U21U0 Ford GT
  • U21U0 Ford Mustang
  • U21U0 Ford Mustang Mach-E
  • U21U0 Ford Mystique
  • U21U0 Ford Probe
  • U21U0 Ford Ranger
  • U21U0 Ford Taurus
  • U21U0 Ford Taurus X
  • U21U0 Ford Tempo
  • U21U0 Ford Thunderbird
  • U21U0 Ford Transit
  • U21U0 Ford Transit Connect
  • U21U0 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.