This Mercedes-Benz manufacturer-specific code indicates an issue with the intake/fuel system. Code P1186 requires Mercedes-Benz diagnostic procedures and may need dealer-level tools for complete diagnosis.
Find certified mechanics near you who can diagnose and repair P1186.
For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.