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  1. P0421 Code won't go away!

    Started by paultt, 09-05-2011 03:29 PM
    cat, emissions, engine light, o2 sensor, p0421
    • Replies: 15
    • Views: 13,877
    Last Post: 01-16-2014 07:08 PM
    by timezwasting  Go to last post

    Forum:
    Problems with the Mazda3

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