Conditions for Setting the DTC
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
- The ECM detects a temperature difference at power-up that indicates that the ECT sensor is 30° C (54° F) warmer than the IAT sensor.
OR
- The ECM detects a temperature difference at power-up that indicates that the ECT sensor is 15° C (27° F) warmer than the IAT sensor, and NO engine block heater was not detected.
OR
- The ECM detects a temperature difference at power-up that indicates that the ECT sensor is 15° C (27° F) warmer than the IAT sensor, the engine cranked for greater than 10 s without starting and NO engine block heater was not detected.