P0202 MERCEDES-BENZ – Injector Circuit/Open Cylinder 2

P0202 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

P0202 MERCEDES-BENZ Possible Causes

Faulty fuel injector 2,Fuel Injector 2 harness is open or shorted,Fuel injector 2 circuit poor electrical connection,Faulty Engine Control Module (ECM)

P0202 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 2.