Conditions for Running the DTC

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Engine has been running for more than 10 seconds.
Engine coolant is more than 45°C (113°F).
DTCs P0201-P0208, P1224, P1227, P122A, P1233, P1236, P1239, P1242, P1247, P2146, P2149, P2152 or P2155 are not set.
The vehicle speed is in Park or Neutral.
Engine speed is between 600-850 RPM
This diagnostic runs once per ignition cycle once the above criteria has been met.