C121D

C121D Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

C121D Diagnosis

The fault remains active until the ignition is turned ON when the fault is no longer present. Some BHM configurations force this circuit off until the ignition switch is cycled.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 C121D Fault Code Meaning :

Ford C121D Symptoms :

Ford C121D Reasons :

How To Fix Ford C121D Trouble Code ?

Which Ford cars have the code C121D?

  • C121D Ford Aerostar
  • C121D Ford Bronco
  • C121D Ford C-Max
  • C121D Ford C-Max Energi
  • C121D Ford C-Max Hybrid
  • C121D Ford Contour
  • C121D Ford Crown Victoria
  • C121D Ford EcoSport
  • C121D Ford Econoline
  • C121D Ford Edge
  • C121D Ford Escape
  • C121D Ford Escape Hybrid
  • C121D Ford Escort
  • C121D Ford Everest
  • C121D Ford Excursion
  • C121D Ford Expedition
  • C121D Ford Explorer
  • C121D Ford Explorer Sport Trac
  • C121D Ford F-150
  • C121D Ford F-250
  • C121D Ford F-350
  • C121D Ford Fiesta
  • C121D Ford Flex
  • C121D Ford Focus
  • C121D Ford Focus Electric
  • C121D Ford Freestar
  • C121D Ford Freestyle
  • C121D Ford Fusion
  • C121D Ford Fusion Energi
  • C121D Ford Fusion Hybrid
  • C121D Ford Fusion Plug-In Hybrid
  • C121D Ford GT
  • C121D Ford Mustang
  • C121D Ford Mustang Mach-E
  • C121D Ford Mystique
  • C121D Ford Probe
  • C121D Ford Ranger
  • C121D Ford Taurus
  • C121D Ford Taurus X
  • C121D Ford Tempo
  • C121D Ford Thunderbird
  • C121D Ford Transit
  • C121D Ford Transit Connect
  • C121D 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.