Going into limp mode with T/C light on and engine light

I suspect at this point it is not the throttle body (captain obvious). So we need to start with checking for codes and finding out what is there that is causing them to think that the throttle body is the issue. I suspect there is a throttle position sensor code as that is common to cause limp mode and part of the throttle body.

Here is a guide that will help with getting the codes:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Also, here is a guide that talks about limp mode and possible causes:

https://www.2carpros.com/articles/reduced-power-limp-mode

Lastly can you get the part number and manufacturer of the throttle body just to make sure we are not getting incorrect parts?

Let's start with this info and go from there. Thanks