Just checked my Peake tool and I'm no longer getting the pre-cat o2 sensor code, but now I'm getting a different code - 2772 "Control Tank-Ventilation Valve".

I drove this car less than 1k miles over the past year, so I guess I shouldn't be surprised by the random fault codes. I also found mouse piss/poop on the plenum cover, so now I have mice living in the engine compartment. wtf.