P0212 MERCEDES-BENZ – Injector Circuit/Open Cylinder 12

 

P0212: DIY Repairing Video Tutorial

https://youtu.be/Ax0rtaqofzY

Check out nonda Auto DIY Center for more engine error code repairing videos.
https://www.youtube.com/playlist?list=PL-Lyko0O0oxHe1AGvzwAz-wokJPXAtW97

 

P0212 MERCEDES-BENZ Possible Symptoms

  Engine Light ON (or Service Engine Soon Warning Light),Lack/Loss of Power,The engine may be harder to start,Engine hesitation  

P0212 MERCEDES-BENZ Possible Causes

  Faulty fuel injector 12,Fuel Injector 12 harness is open or shorted,Fuel injector 12 circuit poor electrical connection,Faulty Engine Control Module (ECM)  

P0212 MERCEDES-BENZ Description

  This fault code is stored in the Engine Control Module (ECM) when the injector control circuit does not behave as expected. The ECM uses the induced voltage from the injector to indicate that the fuel injector circuit is operating correctly electrically. It does not signal the mechanical condition of the injector. When the ECM opens the ground circuit for an injector (to cease current flow) a voltage is induced into the winding. This voltage shows the electrical integrity of the injector and associated wiring. Absence of this induced voltage results in a fault code being stored in the ECM. This code is generated if the fault is associated with cylinder 12.