Conditions for Running the DTC

WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0601, P0602, P0604, P0606, P1516, P2101, P2108 or U0107 are not set.
DTCs P0120 and P0220 are not active at the same time.
The engine operates longer than 1 second.
The engine speed is greater than 500 RPM.
This diagnostic runs continuously when the above conditions are met.