Conditions for Running the DTC

WARNING: This page is about a different car, the 2005 GMC Yukon XL, 2005 Chevrolet Suburban, and 2005 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0335, P0336, P0341, P0342, P0343 are not set.
The engine coolant temperature (ECT) is more than 70°C (158°F).
This diagnostic runs continuously when the above conditions are met.