P0421 Mazda 6

Posted on 11 Dec 2023

P1487 registered Code défaut p0421: efficacité du catalyseur de préchauffage en dessous Catalytic converter work converters car important into runs pollutants turns substances less through

Need help with codes p1487 and p0421 for Mazda 6 2004.

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P0421 — warm up catalyst efficiency below threshold (bank 1) – eeuroparts

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Mazda 6 p0421 code: meaning, causes, how to fix

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