2002 Audi A6 Quattro Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2002 Audi A6 Quattro
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2002 Audi A6 Quattro ProblemsCheck Engine Light Due to Vacuum Leaks, Oxygen Sensor, or Catalytic Converter Fault
Vacuum leaks, oxygen sensor failure, and catalytic converter efficiency faults can cause the Check Engine Light to illuminate.
The anti-lock brake system (ABS) control module may fail causing the ABS light to illuminate. Failed modules should be replaced to restore ABS operation.