P3909

P3909 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3909 Diagnosis

The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for an open circuit fault.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 P3909 Fault Code Meaning :

Ford P3909 Symptoms :

Ford P3909 Reasons :

How To Fix Ford P3909 Trouble Code ?

Which Ford cars have the code P3909?

  • P3909 Ford Aerostar
  • P3909 Ford Bronco
  • P3909 Ford C-Max
  • P3909 Ford C-Max Energi
  • P3909 Ford C-Max Hybrid
  • P3909 Ford Contour
  • P3909 Ford Crown Victoria
  • P3909 Ford EcoSport
  • P3909 Ford Econoline
  • P3909 Ford Edge
  • P3909 Ford Escape
  • P3909 Ford Escape Hybrid
  • P3909 Ford Escort
  • P3909 Ford Everest
  • P3909 Ford Excursion
  • P3909 Ford Expedition
  • P3909 Ford Explorer
  • P3909 Ford Explorer Sport Trac
  • P3909 Ford F-150
  • P3909 Ford F-250
  • P3909 Ford F-350
  • P3909 Ford Fiesta
  • P3909 Ford Flex
  • P3909 Ford Focus
  • P3909 Ford Focus Electric
  • P3909 Ford Freestar
  • P3909 Ford Freestyle
  • P3909 Ford Fusion
  • P3909 Ford Fusion Energi
  • P3909 Ford Fusion Hybrid
  • P3909 Ford Fusion Plug-In Hybrid
  • P3909 Ford GT
  • P3909 Ford Mustang
  • P3909 Ford Mustang Mach-E
  • P3909 Ford Mystique
  • P3909 Ford Probe
  • P3909 Ford Ranger
  • P3909 Ford Taurus
  • P3909 Ford Taurus X
  • P3909 Ford Tempo
  • P3909 Ford Thunderbird
  • P3909 Ford Transit
  • P3909 Ford Transit Connect
  • P3909 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.