both

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  1. Brooke

    Both P0420 and P0430 codes

    Heya~ So it's that time of year when I have to get smogged, and I'm getting a check engine light indicating both P0420 and P0430 (P0430 Catalyst System Efficiency Below Threshold (Bank 2)/P0420 Catalyst System Efficiency Below Threshold (Bank 1)) at the same time. I'm driving a 2006...