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Re: Cat Efficiency P0430 P0420
Posted to Technical Discussion Forum on 11/6/2017 2 Replies



How many miles?

No O2 codes? You thought the O2s would fix it? 4 sensors failed at or about the same time and without codes for the sensors the computer popped the cat codes... happens a lot. :-)

Did you drive it to see how the O2s were reacting? Did yo... Login to read more.

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