C3989

C3989 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3989 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 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 C3989 Fault Code Meaning :

Ford C3989 Symptoms :

Ford C3989 Reasons :

How To Fix Ford C3989 Trouble Code ?

Which Ford cars have the code C3989?

  • C3989 Ford Aerostar
  • C3989 Ford Bronco
  • C3989 Ford C-Max
  • C3989 Ford C-Max Energi
  • C3989 Ford C-Max Hybrid
  • C3989 Ford Contour
  • C3989 Ford Crown Victoria
  • C3989 Ford EcoSport
  • C3989 Ford Econoline
  • C3989 Ford Edge
  • C3989 Ford Escape
  • C3989 Ford Escape Hybrid
  • C3989 Ford Escort
  • C3989 Ford Everest
  • C3989 Ford Excursion
  • C3989 Ford Expedition
  • C3989 Ford Explorer
  • C3989 Ford Explorer Sport Trac
  • C3989 Ford F-150
  • C3989 Ford F-250
  • C3989 Ford F-350
  • C3989 Ford Fiesta
  • C3989 Ford Flex
  • C3989 Ford Focus
  • C3989 Ford Focus Electric
  • C3989 Ford Freestar
  • C3989 Ford Freestyle
  • C3989 Ford Fusion
  • C3989 Ford Fusion Energi
  • C3989 Ford Fusion Hybrid
  • C3989 Ford Fusion Plug-In Hybrid
  • C3989 Ford GT
  • C3989 Ford Mustang
  • C3989 Ford Mustang Mach-E
  • C3989 Ford Mystique
  • C3989 Ford Probe
  • C3989 Ford Ranger
  • C3989 Ford Taurus
  • C3989 Ford Taurus X
  • C3989 Ford Tempo
  • C3989 Ford Thunderbird
  • C3989 Ford Transit
  • C3989 Ford Transit Connect
  • C3989 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.