Mazda 6 P0421 Code

Posted on 01 Nov 2023

Need help with codes p1487 and p0421 for mazda 6 2004. P0421 warm up catalyst efficiency below threshold (bank 1) # Code problem mazda threshold bank below

P0421 my 2003 Mazda Protege5 needs a CalCat (California Catalytic

2010 mazda 6 2.5 p0421 diagnostic procedure P0421 my 2003 mazda protege5 needs a calcat (california catalytic P0421 — warm up catalyst efficiency below threshold (bank 1) – eeuroparts

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

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