Conditions for Setting the DTC
WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
P0973
TCM detects a short to ground on the shift solenoid valve 1 control circuit for 2 s.
P0974
TCM detects an open or short to voltage on the shift solenoid valve 1 control circuit for 2 s.