Conditions For Running DTC

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Suburban, and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0101, P0102, P0103, P0116, P0117, P0118, P0125, P0128, P0502, P0503 are not set.
The engine run time is more than 120 seconds.
The Vehicle Speed Sensor (VSS) indicates that the vehicle speed is less than 7 MPH.
The Engine Coolant Temperature (ECT) is more than 140° F (60° C).
The Mass Air Flow (MAF) is less than 15 g/s.