You don't need to scrape your cats for them to develop cracks. Heat cycles can easily cause a small leak and that's exactly what your codes are indicating, "bro".
It's an easy check. If it is, it's an easy fix. If it's not, well, you should just hope it's an exhaust leak because electrical gremlins are a nightmare.
If you were so inclined to check instead of getting all defensive about how tight your bolts are, you can use a spray bottle with some soap in it to spray the system down and look for bubbles. If you don't like the idea of a car idling above you, you can also hook up a vacuum cleaner to the tail pipes and seal the off the second exhaust pipe and check for leaks that way. Other tell tail signs are areas with soot present.
Good luck and happy hunting.
PS, do you even track, bro?
