Common Mercedes Fault Codes

Most common OBD-II codes reported for Mercedes vehicles

P0300

Random/Multiple Cylinder Misfire Detected

critical
P0171

System Too Lean (Bank 1)

moderate
P0420

Catalyst System Efficiency Below Threshold (Bank 1)

moderate
P0335

Crankshaft Position Sensor A Circuit Malfunction

critical
P0128

Coolant Temperature Below Thermostat Regulating Temperature

minor
P0011

Camshaft Position Timing Over-Advanced (Bank 1)

moderate
P0441

AI diagnosis available

P0600

AI diagnosis available

B0010

AI diagnosis available

U0140

AI diagnosis available

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