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S4 Check Engine Light

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S4 Check Engine Light

This is a discussion on S4 Check Engine Light within the S Car Model Line forum, part of the Audi category; Hello Everyone! I am looking to buy a B5 S4 (2000). I test drove one and the check engine light ...

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07-20-2008, 06:06 AM

Senior Member

Join Date: Apr 2008

Posts: 1,720

S4 Check Engine Light

Hello Everyone!

I am looking to buy a B5 S4 (2000). I test drove one and the check engine light was on. I asked him why and he told me that it was on because the Oxygen sensors are sensing a lot more Oxygen/Air because of the bigger downpipes and that this is a very common occurrence in cars with upgraded bigger downpipes.

Is this true? It is definately a very nice car and it has records for everything? Your thoughts.

Thanks,

« Void Warranty | User 2k s4... »

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