I finally replaced my combi valve again today. New PN showed up so i grabbed it. 06K-131-097-AA A little more expensive than the older one, so i hope it's "different"/"better". Ebay seller had it for like $300, so not as bad as MSRP dealership had it at.
Also, might harass the pressure sensor if it goes again next time. 06k906052 is the little inline guy. Maybe he is throwing this damned code? Super easy to get to.
Regardless, i got a readiness issue from turning the code off in Maestro. Didn't care to waste an emissions/inspection appointment with that and the cat not ready, so i bit the bullet and bought the new revision combi.
Emissions test on Tuesday. Wish me luck.
Here's a few pics of the location of the valve as well as the new vs old rev, and the pressure switch (my next target if the CEL returns)