Conditions For Running DTC

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0101, P0102, P0103, P0107, P0108, P0116, P0117, P0118, P0236, P0237, P0238, P0335, P0336, P0404, P0405, P0406, or P0500 is not set.
The engine speed is between 500-3600 RPM.
The engine run time is more than 8 seconds.
The vehicle speed is less than 100 MPH.
The Mass Air Flow (MAF) is less than 444 g/s.
The Engine Coolant Temperature (ECT) is more than 20°C (68°F).
The Power Take Off (PTO) is OFF.
The above conditions exist for 5 seconds.