DTC Descriptor
WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- DTC P0128
-
Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature
- DTC P01F0
-
Coolant Temperature Dropped Below Diagnostic Monitoring Temperature