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International Automotive Technicians Network
Re: Wrapping up the low fuel economy P0420 Prius
Posted to Technical Theory Forum on 7/20/2011

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To some extent/in some cases. From OBD, we don't really define/constrain/regulate what manufacturers do or don't do for default/limp-home actions (if any) once a fault is detected. But, sometimes the... Login to read more.