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Old 01-07-2017, 08:31 PM
afomenko afomenko is offline
2012 Altima Sedan
2013 Sentra
2006 Pathfinder
Join Date: Dec 2016
Posts: 36
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if anybody cares where it went

voltage reported via OBD2 proved to be a red herring, as some normally running vehicles with no codes reported have exactly same values reported

I've completely eliminated all and any things in intake side: plugges small leak in intake manifold on gaskets, cleaned injectors, swapped ignition coils between banks and jonjectors between banks - it all made car to run smoother, but P2A00 was reappearing after some time

finally, I found leaks in catalyst I've placed when dealing with P0420, it made me think I'm on right track, then removing catalyst, I found that welding on the flange to downstream catalyst leaked substantially, broke off as I was removing catalyst

no mystery anymore, replacing both catalysts on passenger side and likely this is the end of story
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