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International Automotive Technicians Network
Re: Pre and Post cat. O2 sensor graphs
Posted to Technical Theory Forum on 6/26/2002

Hello Robert,

Peter never told us what DTC was stored. We, including Peter, don't know if we're dealing with a past OBD II onboard software logged P0420/P0430.

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Except the customer if a P0420/P0430... Login to read more.