Can you help me with OBDII code: P0430 ?

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Eschrichtius

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Just an update, still no CEL code. Everything's working great and MPG is back where it supposed to be :)
 

kingbilly68

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Bringing this thread back instead of starting a new one. My wife's 08 Yukon threw a check engine light yesterday. Scanned it and got a p0430 code. Is the O2 sensor still the place to start? Or should I plan on a cat? Thanks.


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