P3984

P3984 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P3984 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 is detecting more than one smart switch with the same ID number present on the vehicle. The outputs controlled by the switch and the indicator in the switch are commanded OFF.

The disconnected pipe malfunction is detected when the ventilator tube from the valve cover to the separator device is disconnected resulting in a pressure below the lower limit.Both of these malfunctions will result in a DTC being set.

Ford P3984 Fault Code Meaning :

Ford P3984 Symptoms :

Ford P3984 Reasons :

How To Fix Ford P3984 Trouble Code ?

Which Ford cars have the code P3984?

  • P3984 Ford Aerostar
  • P3984 Ford Bronco
  • P3984 Ford C-Max
  • P3984 Ford C-Max Energi
  • P3984 Ford C-Max Hybrid
  • P3984 Ford Contour
  • P3984 Ford Crown Victoria
  • P3984 Ford EcoSport
  • P3984 Ford Econoline
  • P3984 Ford Edge
  • P3984 Ford Escape
  • P3984 Ford Escape Hybrid
  • P3984 Ford Escort
  • P3984 Ford Everest
  • P3984 Ford Excursion
  • P3984 Ford Expedition
  • P3984 Ford Explorer
  • P3984 Ford Explorer Sport Trac
  • P3984 Ford F-150
  • P3984 Ford F-250
  • P3984 Ford F-350
  • P3984 Ford Fiesta
  • P3984 Ford Flex
  • P3984 Ford Focus
  • P3984 Ford Focus Electric
  • P3984 Ford Freestar
  • P3984 Ford Freestyle
  • P3984 Ford Fusion
  • P3984 Ford Fusion Energi
  • P3984 Ford Fusion Hybrid
  • P3984 Ford Fusion Plug-In Hybrid
  • P3984 Ford GT
  • P3984 Ford Mustang
  • P3984 Ford Mustang Mach-E
  • P3984 Ford Mystique
  • P3984 Ford Probe
  • P3984 Ford Ranger
  • P3984 Ford Taurus
  • P3984 Ford Taurus X
  • P3984 Ford Tempo
  • P3984 Ford Thunderbird
  • P3984 Ford Transit
  • P3984 Ford Transit Connect
  • P3984 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.