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Check Engine Light Keeps Coming On After Dealershi

6359 Views 12 Replies 7 Participants Last post by  cheesemax
Hope all is well , my check engine light keeps illuminating after the dealers states that the problem is cured. dealer is stating that the O2 sensor is the problem and replace the vac lines, but the check light appears.

please advise
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I have had a similar check engine light problem with my 2000 Audi A6 4.2. The light has been on for over 30000 miles now! Before the warranty ran out I had all kinds of repairs made but nothing solved the problem. The car is running just fine so I have given up trying to locate the problem. Did you have any performance issues when your light was on?
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