P121E

P121E Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P121E Diagnosis

The fuse in the main PDM powering this circuit may be open. The root cause could be excessive loads on an output, or a short to ground in the VBAT2 supply to the CHM.The BHM supplies battery power on this circuit when the key is in the RUN or CRANK positions. Troubleshoot for a wiring fault shorting this circuit to ground or for too many optional circuits spliced into it that is causing the BHM to turn it off.

When the engine is in higher engine speed and torque condition, the differential pressure over the DPF is expected to rise according to engine speed and torque. If the differential pressure exceeds a threshold then the differential pressure sensor plausibility DTC is set.

Ford P121E Fault Code Meaning :

Ford P121E Symptoms :

Ford P121E Reasons :

How To Fix Ford P121E Trouble Code ?

Which Ford cars have the code P121E?

  • P121E Ford Aerostar
  • P121E Ford Bronco
  • P121E Ford C-Max
  • P121E Ford C-Max Energi
  • P121E Ford C-Max Hybrid
  • P121E Ford Contour
  • P121E Ford Crown Victoria
  • P121E Ford EcoSport
  • P121E Ford Econoline
  • P121E Ford Edge
  • P121E Ford Escape
  • P121E Ford Escape Hybrid
  • P121E Ford Escort
  • P121E Ford Everest
  • P121E Ford Excursion
  • P121E Ford Expedition
  • P121E Ford Explorer
  • P121E Ford Explorer Sport Trac
  • P121E Ford F-150
  • P121E Ford F-250
  • P121E Ford F-350
  • P121E Ford Fiesta
  • P121E Ford Flex
  • P121E Ford Focus
  • P121E Ford Focus Electric
  • P121E Ford Freestar
  • P121E Ford Freestyle
  • P121E Ford Fusion
  • P121E Ford Fusion Energi
  • P121E Ford Fusion Hybrid
  • P121E Ford Fusion Plug-In Hybrid
  • P121E Ford GT
  • P121E Ford Mustang
  • P121E Ford Mustang Mach-E
  • P121E Ford Mystique
  • P121E Ford Probe
  • P121E Ford Ranger
  • P121E Ford Taurus
  • P121E Ford Taurus X
  • P121E Ford Tempo
  • P121E Ford Thunderbird
  • P121E Ford Transit
  • P121E Ford Transit Connect
  • P121E 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.