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Re: P0420 / OBD2 / ASM / IM240
Posted to Emissions Forum on 1/14/2010 2 Replies



Ok, thanks...

I'm not sure I'm following your P0420 resolution. Are you telling me that you did not clear the P0420 and re-run the cat. monitor prior to replacing the post O2 sensor? I'm not real concerned with your ASM test or dyne operations. I'm... Login to read more.

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