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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 60 (Engine Cooling System) >> Diagnostic Information and Procedures >> DTC P2181: Engine Cooling System >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

The ECM detects the engine coolant thermostat is stuck open for at least 90 s.