Conditions for Setting the DTC
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
The TP sensor 1 to TP sensor 2 correlation error is more than 6 percent for more than 0.14 second.
OR
The PCM detects a short on the TP sensor 1 signal circuit for more than 0.10 second.