Having problems with your 2002 Mazda Millenia ?

(2002 Mazda millenia) I was told by Pep Boy these diagnostic codes: p0421 warm up cat efficiency bank 1 and p1170 b1s1 o2 sensor inversion fault. What do they mean and how should I address them?

Posted / edited by AnonymousUser on : 21-06-2021

Answers :

Repair Help & Product Troubleshooting for 2002 Mazda Millenia

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