U0021

U0021 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U0021 Diagnosis

The axle lift 2 output circuit is commanded OFF, but air pressure is detected at the pressure feedback switch. Troubleshoot for axle lift 2 air solenoid fault, and for air pressure switch short 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 OFF.

The top-of-clutch switch and bottom-of-clutch switch are both measured as closed at the same time. Troubleshoot for clutch switch shorted, or for a wiring fault between the clutch switch and the BHM.

Ford U0021 Fault Code Meaning :

Ford U0021 Symptoms :

Ford U0021 Reasons :

How To Fix Ford U0021 Trouble Code ?

Which Ford cars have the code U0021?

  • U0021 Ford Aerostar
  • U0021 Ford Bronco
  • U0021 Ford C-Max
  • U0021 Ford C-Max Energi
  • U0021 Ford C-Max Hybrid
  • U0021 Ford Contour
  • U0021 Ford Crown Victoria
  • U0021 Ford EcoSport
  • U0021 Ford Econoline
  • U0021 Ford Edge
  • U0021 Ford Escape
  • U0021 Ford Escape Hybrid
  • U0021 Ford Escort
  • U0021 Ford Everest
  • U0021 Ford Excursion
  • U0021 Ford Expedition
  • U0021 Ford Explorer
  • U0021 Ford Explorer Sport Trac
  • U0021 Ford F-150
  • U0021 Ford F-250
  • U0021 Ford F-350
  • U0021 Ford Fiesta
  • U0021 Ford Flex
  • U0021 Ford Focus
  • U0021 Ford Focus Electric
  • U0021 Ford Freestar
  • U0021 Ford Freestyle
  • U0021 Ford Fusion
  • U0021 Ford Fusion Energi
  • U0021 Ford Fusion Hybrid
  • U0021 Ford Fusion Plug-In Hybrid
  • U0021 Ford GT
  • U0021 Ford Mustang
  • U0021 Ford Mustang Mach-E
  • U0021 Ford Mystique
  • U0021 Ford Probe
  • U0021 Ford Ranger
  • U0021 Ford Taurus
  • U0021 Ford Taurus X
  • U0021 Ford Tempo
  • U0021 Ford Thunderbird
  • U0021 Ford Transit
  • U0021 Ford Transit Connect
  • U0021 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.