Wrapping up the low fuel economy P0420 Prius

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Posted to Technical Theory Forum on 6/26/2011 58 Replies

Friends,

Some of you saw my post a few weeks back on the 2005 Prius with no code but a P0420 and a complaint of a precipitous drop in fuel economy, from the mid 40's down to the mid 30's. Replacing the cat somehow cured the poor fuel economy. I was hoping to... Login to read more.

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