P2121

P2121 Ford engine fault code diagnosis, code meaning,symptoms and how to fix it.

P2121 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.Determine if the extra switch is not required for the vehicle or if the switch has been installed but the necessary reference parameter has not been programmed into the BHM.

The BHM measures the current on this circuit when the starter output is commanded ON. This fault indicates the magnetic switch or the wiring between the BHM and the magnetic switch is open circuit.

Ford P2121 Fault Code Meaning :

Ford P2121 Symptoms :

Ford P2121 Reasons :

How To Fix Ford P2121 Trouble Code ?

Which Ford cars have the code P2121?

  • P2121 Ford Aerostar
  • P2121 Ford Bronco
  • P2121 Ford C-Max
  • P2121 Ford C-Max Energi
  • P2121 Ford C-Max Hybrid
  • P2121 Ford Contour
  • P2121 Ford Crown Victoria
  • P2121 Ford EcoSport
  • P2121 Ford Econoline
  • P2121 Ford Edge
  • P2121 Ford Escape
  • P2121 Ford Escape Hybrid
  • P2121 Ford Escort
  • P2121 Ford Everest
  • P2121 Ford Excursion
  • P2121 Ford Expedition
  • P2121 Ford Explorer
  • P2121 Ford Explorer Sport Trac
  • P2121 Ford F-150
  • P2121 Ford F-250
  • P2121 Ford F-350
  • P2121 Ford Fiesta
  • P2121 Ford Flex
  • P2121 Ford Focus
  • P2121 Ford Focus Electric
  • P2121 Ford Freestar
  • P2121 Ford Freestyle
  • P2121 Ford Fusion
  • P2121 Ford Fusion Energi
  • P2121 Ford Fusion Hybrid
  • P2121 Ford Fusion Plug-In Hybrid
  • P2121 Ford GT
  • P2121 Ford Mustang
  • P2121 Ford Mustang Mach-E
  • P2121 Ford Mystique
  • P2121 Ford Probe
  • P2121 Ford Ranger
  • P2121 Ford Taurus
  • P2121 Ford Taurus X
  • P2121 Ford Tempo
  • P2121 Ford Thunderbird
  • P2121 Ford Transit
  • P2121 Ford Transit Connect
  • P2121 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.