Mercedes-Benz GLC300 engine shut off issue following valve replacement on Mercedes-Benz GLC300

Some Mercedes-Benz GLC300 owners report experiencing engine shut off issues following a valve replacement, which may be linked to several factors. These include the triggering of fault code P152500 related to the evaporative emission control system after replacing the PCV valve. Additionally, some owners have encountered problems associated with a defective engine control unit (ECU) that can lead to engine shut off. Issues with the Positive Crankcase Ventilation (PCV) valve have also been reported, resulting in stalling and rough idle. Furthermore, replacing engine sensors may be necessary to address unexpected engine shut off occurrences. There are also reports of cylinder head failures in GLC300 models equipped with the M264 engine, contributing to these engine shut off problems. It is crucial for owners experiencing these issues to consult with a qualified mechanic or authorized service center to accurately diagnose and resolve the underlying causes.