I used to repair LG stoves in a business setting. This could be one of two things. There could be an issue with the wiring. When in business I would replace the whole wiring harness, and this makes sure you get any potential problem in the wiring. This is a little bit of a dog of a job. The less expensive choice would be just to re connect a new wire in place of the one that you feel is causing the issue.
The other thing that I saw, which was way more common, was the component that the wire is attached to had a short, and the failure point was the PCB. I would take a look at the bake element. I would see if you can get a new PCB from LG(there should be a 90 day warranty on a new part typically from LG) and also order the bake element.