[A4] 01 ox sensor question

Tom Love theloves at localaccess.com
Wed Sep 21 21:28:56 EDT 2005

At 70k miles on the '01 A4 1.8Tq the check engine light has come on. The codes come back with oxygen sensor as culprit.
I thought these are usually good for 100k. Other than not being plugged in is there possibly something else causing this?

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