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Discussion Starter #1
Made offer on 2015 v10 coupe, just finished thePPI at local Audi dealer, car ok except check engine for catalytic converters. Dealer thinks maybe after market exhaust contributing (don’t know brand). Mileage 26k.

Has anyone else encountered this?

Thanks,

Greg
 

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The cats are in the header pipes and remain in place when you change out the OEM exhaust system. Its very unusual to change out the headers and I dont recall any cases on the forum where changing the exhaust would throw a cat code.
 

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Cats were not touched, still in place but putting out “ check engine light” seems strange that cats would fail that soon, but since replacement requires engine removal.......
 

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Clean the sensor probes first. This might clear the problem.

We have sold replacement cats to several customer in the past. Not common though.


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