Did I screw up? P0606 code

Immature? Probably. But I had a 2 hour road trip at around 2am and decided to top out my 08 Tacoma “on a closed road” and after I let off the code P0606 popped up. I have delt with codes before but this one I am unfamiliar of. Definitely took it easy the rest of the way and it drove like nothing happened? Any thoughts or advice?

 

P0606 is an internal PCM fault, I wouldn't be overly concerned about it unless it keeps coming back.
I have seen flaky O2 or AFR sensors cause that code to set as well but it's usually accompanied by an O2/AFR sensor code.

 

Gotcha thank you for the input. I have had O2 sensor problems last year so that could be a part of it, I’ll look into that thanks!