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
P1026
Intake Manifold Air Control Solenoid Short To Positive
Audi
Fuel and Air Metering
High severity
P1028
Intake Manifold Air Control Solenoid Short Open Circuit
Audi
Fuel and Air Metering
High severity
P1029
Intake Manifold Air Control Valve Position Sensor Upper Limit Not Reached
Audi
Fuel and Air Metering
High severity
P1031
Intake Manifold Air Control Valve Position Sensor Specification Not Attained
Audi
Fuel and Air Metering
High severity
P1035
Nitrogen Oxides Sensor Range Performance Problem
Audi
Auxiliary Emissions Control
Medium severity
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