Conditions for Setting the DTC: P0220
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. 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.