Mercedes-Benz C-Class Trouble Codes, Symptoms & Recalls
Reviewed by the Wrenchit.ai editorial team · Last reviewed · Editorial standards
Common check engine codes on the Mercedes-Benz C-Class
- P0420 — Catalyst System Efficiency Below Threshold (Bank 1)
- P0300 — Random/Multiple Cylinder Misfire Detected
- P0171 — System Too Lean (Bank 1)
- P0442 — Evaporative Emission System Small Leak Detected
- P0455 — Evaporative Emission System Large Leak Detected
- P0128 — Coolant Temperature Below Thermostat Regulating Temperature
- P0401 — EGR Insufficient Flow Detected
- P0440 — Evaporative Emission Control System Malfunction
- P0301 — Cylinder 1 Misfire Detected
- P0174 — System Too Lean (Bank 2)
Common Mercedes-Benz C-Class symptoms
- Mercedes-Benz C-Class car shaking when braking
- Mercedes-Benz C-Class brakes squealing when stopping
- Mercedes-Benz C-Class check engine light on
- Mercedes-Benz C-Class car won't start
- Mercedes-Benz C-Class car overheating
- Mercedes-Benz C-Class car loses power when accelerating
- Mercedes-Benz C-Class car running or idling rough
- Mercedes-Benz C-Class white smoke from exhaust
- Mercedes-Benz C-Class blue smoke from exhaust
- Mercedes-Benz C-Class battery light on while driving
- Mercedes-Benz C-Class car pulls to one side
- Mercedes-Benz C-Class car ac not blowing cold
Maintenance & recalls
Mercedes-Benz C-Class maintenance resources · Mercedes-Benz C-Class NHTSA recalls & complaints