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
Chevrolet
Fuel and Air Metering
High severity
P1972
Issue in secondary air injection pump (controls emission)
Skoda
Auxiliary Emissions Control
High severity
P1084
Exhaust Valve Timing Control Position Sensor Bank 2 Circuit
Chevrolet
Fuel and Air Metering
High severity
P1087
O2 Sensor Circuit Slow Response in Lean Control Range Bank 1 Sensor 1
Chevrolet
Fuel and Air Metering
Medium severity
P1089
VVEL Control Shaft Position Sensor Bank 1 Circuit
Chevrolet
Fuel and Air Metering
High severity
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