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#1
01-25-2005, 10:10 PM
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check engine light
Why would the check engine light come on after I had the CAT replaced with an after market CAT. The dealership said it would be ok to go with after market. I've read that others that have had the CAT replaced, oem or not, will have the light come on. I had autozone check it and it said that the cAT is performing below threshold. Could it be the O2 sensor? thanks
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