Conditions for Running the DTCs

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

Supply voltage to the devices is in the normal operating range.
The vehicle power mode requires serial data communication to occur.
The DTC U2100 does not have a current status.