Conditions for Running the DTC

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

DTCs P0107, P0108, P0117, P0118, P0335, P0452, P0453, P0496, P0498, P0499, P1128, P1129, P2227, P2228, and P2229 are not set.
The battery voltage is more than 10 volts.
The fuel system is operating in closed loop.
The engine coolant temperature (ECT) is between 4-65°C (39-149°F) at start-up.
DTC P0446 runs once per drive cycle when the above conditions are met.