It a code on both banks, it popped up a day after I brought her home. I don’t have a snapshot of when it happened. I was data logging when the code was thrown though.
I did the cigar smoke test and no leaks. I did however find a clamp that was way up on a hose so I moved that back in a better position and placed the PCV pipe in the air inlet plumbing a little better, there was obvious oil spray on the pipe. Cleared the codes and we'll see if they come back.