U2421

U2421 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U2421 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 ICU reads the wiper switch position and sends the status of the switch to the BHM. This fault becomes active when the ICU reads that both LO speed and HI speed are active at the same time.

The BHM measures the current on this circuit when the headlamp output is commanded ON. This fault indicates that the left high beam headlamp circuit is drawing more current than it is designed to supply and possibly there is a wiring fault shorting this circuit to ground.

Ford U2421 Fault Code Meaning :

Ford U2421 Symptoms :

Ford U2421 Reasons :

How To Fix Ford U2421 Trouble Code ?

Which Ford cars have the code U2421?

  • U2421 Ford Aerostar
  • U2421 Ford Bronco
  • U2421 Ford C-Max
  • U2421 Ford C-Max Energi
  • U2421 Ford C-Max Hybrid
  • U2421 Ford Contour
  • U2421 Ford Crown Victoria
  • U2421 Ford EcoSport
  • U2421 Ford Econoline
  • U2421 Ford Edge
  • U2421 Ford Escape
  • U2421 Ford Escape Hybrid
  • U2421 Ford Escort
  • U2421 Ford Everest
  • U2421 Ford Excursion
  • U2421 Ford Expedition
  • U2421 Ford Explorer
  • U2421 Ford Explorer Sport Trac
  • U2421 Ford F-150
  • U2421 Ford F-250
  • U2421 Ford F-350
  • U2421 Ford Fiesta
  • U2421 Ford Flex
  • U2421 Ford Focus
  • U2421 Ford Focus Electric
  • U2421 Ford Freestar
  • U2421 Ford Freestyle
  • U2421 Ford Fusion
  • U2421 Ford Fusion Energi
  • U2421 Ford Fusion Hybrid
  • U2421 Ford Fusion Plug-In Hybrid
  • U2421 Ford GT
  • U2421 Ford Mustang
  • U2421 Ford Mustang Mach-E
  • U2421 Ford Mystique
  • U2421 Ford Probe
  • U2421 Ford Ranger
  • U2421 Ford Taurus
  • U2421 Ford Taurus X
  • U2421 Ford Tempo
  • U2421 Ford Thunderbird
  • U2421 Ford Transit
  • U2421 Ford Transit Connect
  • U2421 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.