OBD fault code library
Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.
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Fault codes
P1078
Intake Manifold Runner Control System Malfunction High RPM
Mercedes Benz
Fuel and Air Metering
High severity
P1082
Exhaust Bank 3- Mixture Adaption Range 2 Lower Lean Limit Not Reached
Mercedes Benz
Auxiliary Emissions Control
High severity
P1087
O2 Sensor Circuit Slow Response in Lean Control Range Bank 1 Sensor 1
Mercedes Benz
Fuel and Air Metering
Medium severity
P1092
VVEL Control Shaft Position Sensor Bank 2 Circuit
Mercedes Benz
Fuel and Air Metering
High severity
P1096
O2 Sensor Circuit Slow Switching From Lean to Rich Bank 2 Sensor 1
Mercedes Benz
Fuel and Air Metering
Medium severity
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