This code is specific to the throttle control system, which I believe you already know. We have two issues to overcome. First, the problem (based on your description) is intermittent. That means testing needs to occur when the problem is present. Second, there isn't one specific wire or component that the code indicates. Instead, it provides diagnostics which include testing of wiring, circuits, and connectors.
So, I have attached the diagnostics below. Take a look through them and let me know if you are comfortable performing them. Additionally, let me know if you need anything or things other than what is listed.
Let me know if you find or if you have other questions.
See pics below.
Images (Click to enlarge)
Wednesday, February 22nd, 2023 AT 8:27 PM