U0939

U0939 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

U0939 Diagnosis

The output circuits that are powered by VBAT3 will all be inoperative. Other fault codes may be present, but troubleshoot for this first. The fuse in the main PDM powering this circuit may be open.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 U0939 Fault Code Meaning :

Ford U0939 Symptoms :

Ford U0939 Reasons :

How To Fix Ford U0939 Trouble Code ?

Which Ford cars have the code U0939?

  • U0939 Ford Aerostar
  • U0939 Ford Bronco
  • U0939 Ford C-Max
  • U0939 Ford C-Max Energi
  • U0939 Ford C-Max Hybrid
  • U0939 Ford Contour
  • U0939 Ford Crown Victoria
  • U0939 Ford EcoSport
  • U0939 Ford Econoline
  • U0939 Ford Edge
  • U0939 Ford Escape
  • U0939 Ford Escape Hybrid
  • U0939 Ford Escort
  • U0939 Ford Everest
  • U0939 Ford Excursion
  • U0939 Ford Expedition
  • U0939 Ford Explorer
  • U0939 Ford Explorer Sport Trac
  • U0939 Ford F-150
  • U0939 Ford F-250
  • U0939 Ford F-350
  • U0939 Ford Fiesta
  • U0939 Ford Flex
  • U0939 Ford Focus
  • U0939 Ford Focus Electric
  • U0939 Ford Freestar
  • U0939 Ford Freestyle
  • U0939 Ford Fusion
  • U0939 Ford Fusion Energi
  • U0939 Ford Fusion Hybrid
  • U0939 Ford Fusion Plug-In Hybrid
  • U0939 Ford GT
  • U0939 Ford Mustang
  • U0939 Ford Mustang Mach-E
  • U0939 Ford Mystique
  • U0939 Ford Probe
  • U0939 Ford Ranger
  • U0939 Ford Taurus
  • U0939 Ford Taurus X
  • U0939 Ford Tempo
  • U0939 Ford Thunderbird
  • U0939 Ford Transit
  • U0939 Ford Transit Connect
  • U0939 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.