Conditions for Running the DTC

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

DTC P0335, P0336, P0340, P0341, P0641, or P0651 is not set.
The engine is running.
The engine speed is less than 2,000 RPM.
DTC P0016 runs continuously when the above conditions are met.