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International Automotive Technicians Network
Re: p0420/p0430
Posted to Technical Discussion Forum on 4/28/2023

john ,

these are very accurate codes . no exhaust leaks , good . when you say you scoped the "O2's".......i think those are AFR's correct ? what did you test for ?

if in fact they're O'2's what did you look for in your pattern ? again , probably AFR's , wh... Login to read more.