code 2f52 with no check engine light?

Here is information on the code:

The fault code 2F52 "Super knocking detection."

Does the engine run? We need more information to help you. If the engine runs and sounds okay, I would lean towards a bad PCM. Can you upload a video of the engine cranking over/running please?

Car drives fine yes.

Okay, let's swap out the knock sensor to see if that fixes it which it should. Here is the location of the sensor. Also, the sensor might just be loose, which will cause this problem as well. Check out the images (below). Let us know how it goes.

Okay, will do. Why is it that they can go bad without a knocking engine? Isn't its job to give out the code when there is a knock? I replaced many on different cars that had zero issues and it made a day and night difference.

The codes will only come up when the knock cannot be controlled. Let us know after you check out the sensor.