MERCEDES-BENZ

LI49.20-P-078714

2024-12-20 · NHTSA 11012060

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

Complaint Check engine light illuminated. Fault code P042000 Current or stored in MRG2 control unit. Cause Catalytic converter not operating efficiently Remedy Replace catalytic converter. Note: Additional hardware replacement is not needed unless other symptoms are present. If there are other faults relating to engine operation, diagnose these separately.

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.