Got my car back from the body shop today. I had cleared the codes before I took it in. The CEL was on and my gas tank was on empty, so somebody was joy ridding my car.
Anyways, hooked up the Durametric to check the fault codes and the knock sensor code was not there, but fault codes P0430 and P0420 were back.
I ordered in 2 new knock sensors lol.
I'm still going to replace them along with spark plugs tomorrow.