Conditions for Setting the DTC: P0220
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
The TP sensor 2 voltage is less than 0.25 volt or more than 4.59 volts for more than 1 second.