If it were pcv related it would be affecting both banks. Bank 2,or the front/left side is having issues. The easiest way for me is that I would pull up the o2s11,o2s21 upstream sensor voltage data then spray some brake clean into the intake and look for the voltage to spike up to 1 volt. If that left side still shows 0 volts,then there will be either a sensor,circuit,or raraely a pcm issue. But if you do not have access to a good scanner that can view the parameters, spray the top of the engine when it's cold and listen for a slurp sound where the intake bolts to the heads, this is another prime suspect even though you only show codes for 1 bank,it is entirely possible to still have a huge vacuum leak. Always look and listen for the obvious things. Some of these engines also had a variable intake runner system that bolted to the rear of the intake between the firewall and the intake that has a huge round o-ring that would fail and cause massive leaks so be sure to wet the back side of the intake as well.
Jul 12, 2019 at 10:50 AM
