tracking my code down was very very simple. at the time of de-modding my car, we weren't able to reflash it that day, so we adjusted the fuel scaling via DeltaDash to be close to what it should be. apparently, the ecu didn't like that. it was clearly running nice and rich like it should, but the ecu was unhappy for some reason and kept throwing this code.
got it flashed yesterday and it runs like a champ.