Vacuum leaks, oxygen sensor failure, and catalytic converter efficiency faults can cause the Check Engine Light to illuminate.
Audi Problem Reports
RepairPal Verified Audi Problem Reports
The water pump may fail resulting in engine overheating and possible timing belt damage. Overheating and/or timing belt failure can result in very expensive engine repairs. As a precaution, it is recommended to inspect the timing belt and water pump at regular intervals.
An engine misfire may be noted after cold start resulting in illumination of the Check Engine Light. Our technicians tell us updated powertrain control module (PCM) software is available to correct this concern.