Conditions for Running 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.

There are no EBCM wheel speed sensor DTCs.
The EBCM is communicating over the serial data circuit for more than 5 seconds.
DTC P0318 runs continuously once the above conditions are met.