Conditions for Running the DTC

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0335, P0336, P0340, P0341, P0365, P0366, P0641, and P0651 are not set.
The engine is cranking or running.
The crankshaft and camshaft position signals are synchronized.
The camshaft position actuator is in the parked position.
DTC P0016 and P0017 run continuously once the above conditions are met.