C3977

C3977 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C3977 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 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 C3977 Fault Code Meaning :

Ford C3977 Symptoms :

Ford C3977 Reasons :

How To Fix Ford C3977 Trouble Code ?

Which Ford cars have the code C3977?

  • C3977 Ford Aerostar
  • C3977 Ford Bronco
  • C3977 Ford C-Max
  • C3977 Ford C-Max Energi
  • C3977 Ford C-Max Hybrid
  • C3977 Ford Contour
  • C3977 Ford Crown Victoria
  • C3977 Ford EcoSport
  • C3977 Ford Econoline
  • C3977 Ford Edge
  • C3977 Ford Escape
  • C3977 Ford Escape Hybrid
  • C3977 Ford Escort
  • C3977 Ford Everest
  • C3977 Ford Excursion
  • C3977 Ford Expedition
  • C3977 Ford Explorer
  • C3977 Ford Explorer Sport Trac
  • C3977 Ford F-150
  • C3977 Ford F-250
  • C3977 Ford F-350
  • C3977 Ford Fiesta
  • C3977 Ford Flex
  • C3977 Ford Focus
  • C3977 Ford Focus Electric
  • C3977 Ford Freestar
  • C3977 Ford Freestyle
  • C3977 Ford Fusion
  • C3977 Ford Fusion Energi
  • C3977 Ford Fusion Hybrid
  • C3977 Ford Fusion Plug-In Hybrid
  • C3977 Ford GT
  • C3977 Ford Mustang
  • C3977 Ford Mustang Mach-E
  • C3977 Ford Mystique
  • C3977 Ford Probe
  • C3977 Ford Ranger
  • C3977 Ford Taurus
  • C3977 Ford Taurus X
  • C3977 Ford Tempo
  • C3977 Ford Thunderbird
  • C3977 Ford Transit
  • C3977 Ford Transit Connect
  • C3977 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.