Conditions for Running the DTC

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.

The ignition voltage is between 11 - 18 volts.
The engine speed is greater than 600 RPM.
An A/C request is made.