Car Problem Reports

Audi A6 Quattro Check Engine Light Due to Vacuum Leaks, Oxygen Sensor, or Catalytic Converter Fault

Audi A6 Quattro Problem
24 Reports
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Model Years Affected: 2000, 2001, 2002, 2003, 2004

Exhaust & Emissions Affected: 2.7L V6 Turbo

Average Mileage: 121,692 mi (80,000 mi - 200,000 mi)


Vacuum leaks, oxygen sensor failure, and catalytic converter efficiency faults can cause the Check Engine Light to illuminate.

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