U1021

U1021 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U1021 Diagnosis

The CHM does not suupport PWM type DRLs. The vehicle has a BHM mismatch with the CHM. Replace the CHM with one that is compatible with the BHM.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford U1021 Fault Code Meaning :

Ford U1021 Symptoms :

Ford U1021 Reasons :

How To Fix Ford U1021 Trouble Code ?

Which Ford cars have the code U1021?

  • U1021 Ford Aerostar
  • U1021 Ford Bronco
  • U1021 Ford C-Max
  • U1021 Ford C-Max Energi
  • U1021 Ford C-Max Hybrid
  • U1021 Ford Contour
  • U1021 Ford Crown Victoria
  • U1021 Ford EcoSport
  • U1021 Ford Econoline
  • U1021 Ford Edge
  • U1021 Ford Escape
  • U1021 Ford Escape Hybrid
  • U1021 Ford Escort
  • U1021 Ford Everest
  • U1021 Ford Excursion
  • U1021 Ford Expedition
  • U1021 Ford Explorer
  • U1021 Ford Explorer Sport Trac
  • U1021 Ford F-150
  • U1021 Ford F-250
  • U1021 Ford F-350
  • U1021 Ford Fiesta
  • U1021 Ford Flex
  • U1021 Ford Focus
  • U1021 Ford Focus Electric
  • U1021 Ford Freestar
  • U1021 Ford Freestyle
  • U1021 Ford Fusion
  • U1021 Ford Fusion Energi
  • U1021 Ford Fusion Hybrid
  • U1021 Ford Fusion Plug-In Hybrid
  • U1021 Ford GT
  • U1021 Ford Mustang
  • U1021 Ford Mustang Mach-E
  • U1021 Ford Mystique
  • U1021 Ford Probe
  • U1021 Ford Ranger
  • U1021 Ford Taurus
  • U1021 Ford Taurus X
  • U1021 Ford Tempo
  • U1021 Ford Thunderbird
  • U1021 Ford Transit
  • U1021 Ford Transit Connect
  • U1021 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.