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P0420 questions
Posted to Technical Discussion Forum on 10/29/2001 8 Replies

Hi,

We have a 99 Accord LX F23A1 VTEC with a history of P0420 codes. The car is out of warranty and he wants us to fix it. After resetting the MIL, it takes a couple days to come back on. We have seen a number of these before, but we always refer them to the... Login to read more.

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