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Audi A4 Problems

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

Problem Description and Possible Solution

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

(37 people reported this problem)

Audi A4 Vehicles With This Problem

RepairPal Fair Price Estimate
$1092-$1191
RepairPal Verified
Average mileage: 99,757 (54,000–155,000)
Exhaust & Emissions affected: 1.8L 4 Cylinder Turbo
12 model years affected: 1997, 1998, 1999, 2000, more2001, 2002, 2003, 2004, 2005, 2006, 2010, 2012
Not Your Audi A4 Problem?
Brake problem? Or maybe a faulty head gasket cylinder?
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