U0321

U0321 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U0321 Diagnosis

The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.The position information for the switch becomes Not Available. Remove the duplicate Smart Switch, then use ServiceLink to verify that the correct Smart Switches are configured for the vehicle.

A comparison of pressures from all sensors is made. The smallest difference between the three is determined and a reference pressure is calculated. The Barometric pressure sensor value is compared to the reference value and if the difference is above the threshold a DTC is reported.

Ford U0321 Fault Code Meaning :

Ford U0321 Symptoms :

Ford U0321 Reasons :

How To Fix Ford U0321 Trouble Code ?

Which Ford cars have the code U0321?

  • U0321 Ford Aerostar
  • U0321 Ford Bronco
  • U0321 Ford C-Max
  • U0321 Ford C-Max Energi
  • U0321 Ford C-Max Hybrid
  • U0321 Ford Contour
  • U0321 Ford Crown Victoria
  • U0321 Ford EcoSport
  • U0321 Ford Econoline
  • U0321 Ford Edge
  • U0321 Ford Escape
  • U0321 Ford Escape Hybrid
  • U0321 Ford Escort
  • U0321 Ford Everest
  • U0321 Ford Excursion
  • U0321 Ford Expedition
  • U0321 Ford Explorer
  • U0321 Ford Explorer Sport Trac
  • U0321 Ford F-150
  • U0321 Ford F-250
  • U0321 Ford F-350
  • U0321 Ford Fiesta
  • U0321 Ford Flex
  • U0321 Ford Focus
  • U0321 Ford Focus Electric
  • U0321 Ford Freestar
  • U0321 Ford Freestyle
  • U0321 Ford Fusion
  • U0321 Ford Fusion Energi
  • U0321 Ford Fusion Hybrid
  • U0321 Ford Fusion Plug-In Hybrid
  • U0321 Ford GT
  • U0321 Ford Mustang
  • U0321 Ford Mustang Mach-E
  • U0321 Ford Mystique
  • U0321 Ford Probe
  • U0321 Ford Ranger
  • U0321 Ford Taurus
  • U0321 Ford Taurus X
  • U0321 Ford Tempo
  • U0321 Ford Thunderbird
  • U0321 Ford Transit
  • U0321 Ford Transit Connect
  • U0321 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.