Conditions for Running the DTC

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0117, P0118, P0335, P0336, P2146, P2149, P2152, P2155 and P062C are not set.
The ECT is more than 40°C (104°F).
The engine is running at idle for more than 10 seconds.
The engine RPM is between 500-1,300 RPM.
The vehicle speed is less than 3 mph.
The calculated fuel rate is between 3 mm³ and 25 mm³ .
DTCs P0300-P0308 will run once per ignition cycle when the above conditions are met.