July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
On Board Diagnostic System Description: Consult-II: Function
WARNING: This page is about a different car, the 2003 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying OBD-II Diagnostic Trouble Code (DTC) Function Table