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Re: Toyota Camry Keeps giving code po420 every 6 days or so
Posted to Technical Discussion Forum on 9/6/2007 1 Reply

Kirk,

Appreciate your inout in this forum. Just wanted to point out that SULEV vehicles will set a P0420 code for a 3% degration in Cat efficiency. You are correct..depending on the application...Exhaust leaks, fuel trim issues, TSB/Flashes are a good source... Login to read more.

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