Conditions for Setting the DTC: P0453
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
The FTP sensor voltage is more than 4.9 volts for more than 5 seconds.