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.

Engine coolant temperature at last engine stop was greater than 80°C (176°F).
Engine coolant temperature reduced more than 10°C (16°F) since engine off.
Engine was off more than 60s.
Ignition on, engine off