The analyzer menu is built into the truck. To get to it use the access 1 screen down arrow to select "Service" then press the right arrow. Enter the service password. The first menu should be the analyzer, the service manual has a detailed list of the analyzer menus in the Access 123 section.
To see previous codes, re key the truck to get out of the service menu. Then use the down arrow to get to "events" then use the right arrow to enter that menu. It will show the last 12 codes present.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.