P0327 or P0332
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 KS signal is outside of the assigned noise channel or the KS signal is not present for more than 0.5 second.