Conditions for Setting the DTC
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The ECM detects the internal TP sensor 1 amplification output does not correlate with the TP sensor 1 signal voltage for greater than 4 seconds.