As a newbie with insufficient posts, I cannot create a post with links providing a fuller description of this project. However, the attached file contains a list of Prius2 CAN/OBD2 codes for direct CAN-bus access using an Arduino CAN-shield which may be of interest to others.
Welcome to PriusChat!! Impressive first post You might want to link this thread into your posting over here : https://priuschat.com/posts/3185068/ As you already know, your posts are being moderated until you've posted 5 times.