Conditions For Running DTC

WARNING: This page is about a different car, the 2002 Pontiac Sunfire, 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0336, P0340, or P0341 are not set.
The Engine Coolant Temperature (ECT) is more than 185°F (85°C).