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Shred · 10-05-2016, 05:04 PM

Hi,
I have done a lot of research on this but still can't work out with codes P0420 and P0430, how to tell if it is the Precat (Three Way Cat) or Post Catalytic converter failing?

Can anyone give me some clues?
Thanks

10-05-2016, 05:04 PM	#1
Shred Perfectionist Join Date: Sep 2014 Location: Los Angeles, CA Posts: 86	Precat or Post cat P0420 and P0430? Hi, I have done a lot of research on this but still can't work out with codes P0420 and P0430, how to tell if it is the Precat (Three Way Cat) or Post Catalytic converter failing? Can anyone give me some clues? Thanks