Question by Jclaire: Own S40/02 Volvo with bad cat. If I use aftermarket part will computer recognize & turn off check engine light?
Mechanics tell me that the computer software will not recognize the aftermarket part and not turn off the check engine light. Is this true? Any way around it?
Answer by UCANTCME
As long as the aftermarket cat meets or exceeds the factory specs then it will work but by changing the cat it will not turn off the light you will need to use a scanner to reset it…….
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