Conditions For Running DTC

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0112, P0113, P0183, P0500, P2610 are not set.
The engine must be turned OFF for 10 hours or longer.
The start-up intake air temperature (IAT) is more than 59°F (15°C).