Car Problem Reports

Audi A4 Check Engine Light Due to Vacuum Leaks, Oxygen Sensor, or Catalytic Converter Fault

 
Audi A4 Problem
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Model Years Affected: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006

Exhaust & Emissions Affected: 1.8L 4 Cylinder Turbo

Average Mileage: 108,652 mi (87,500 mi - 137,000 mi)

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

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