P439B

P439B Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P439B 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 wiper switch is in the OFF position and the BHM park input from the wiper motor is not in park position. Troubleshoot for a wiper motor park switch circuit fault.

When the engine is in idle or in low engine speed and torque condition, the differential pressure over the DPF is expected to be close to zero. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford P439B Fault Code Meaning :

Ford P439B Symptoms :

Ford P439B Reasons :

How To Fix Ford P439B Trouble Code ?

Which Ford cars have the code P439B?

  • P439B Ford Aerostar
  • P439B Ford Bronco
  • P439B Ford C-Max
  • P439B Ford C-Max Energi
  • P439B Ford C-Max Hybrid
  • P439B Ford Contour
  • P439B Ford Crown Victoria
  • P439B Ford EcoSport
  • P439B Ford Econoline
  • P439B Ford Edge
  • P439B Ford Escape
  • P439B Ford Escape Hybrid
  • P439B Ford Escort
  • P439B Ford Everest
  • P439B Ford Excursion
  • P439B Ford Expedition
  • P439B Ford Explorer
  • P439B Ford Explorer Sport Trac
  • P439B Ford F-150
  • P439B Ford F-250
  • P439B Ford F-350
  • P439B Ford Fiesta
  • P439B Ford Flex
  • P439B Ford Focus
  • P439B Ford Focus Electric
  • P439B Ford Freestar
  • P439B Ford Freestyle
  • P439B Ford Fusion
  • P439B Ford Fusion Energi
  • P439B Ford Fusion Hybrid
  • P439B Ford Fusion Plug-In Hybrid
  • P439B Ford GT
  • P439B Ford Mustang
  • P439B Ford Mustang Mach-E
  • P439B Ford Mystique
  • P439B Ford Probe
  • P439B Ford Ranger
  • P439B Ford Taurus
  • P439B Ford Taurus X
  • P439B Ford Tempo
  • P439B Ford Thunderbird
  • P439B Ford Transit
  • P439B Ford Transit Connect
  • P439B 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.