Conditions for Setting the DTC
WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0973 sets when either of the following conditions occur for 5 seconds:
- The TCM detects an open in the 1-2 SS valve circuit.
- The TCM detects a short to ground in the 1-2 SS valve circuit.