July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
Code 47 - Sub-TPS Signal
WARNING: This page is about a different car, the 1995 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Code 47 Flow Chart (1 Of 2) Sub-Throttle Position Sensor Signal