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Re: Cat Question
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
So you have a 3.2L and the right side cat is no longer 'converting' as per the down stream O2 sensor that side. IMO, I'd swap out that O2 sensor first to see if the code doesnt come back. $284 for any bolt-up cat is an excellent price. (you have 2 on the 3.2L) If that cat is indeed not doing anything & you plan to keep the truck, you may as well replace the whole exhaust system from the manifolds back. Ripping into one side of the exhaust is hard (and costly) as it is.
Joel
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2016 Subaru Forester 2.5i base CVT
2016 Nissan Quest SV
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