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 P0443, P2414, and P2415 are not set.
The ignition is ON.
The HO2S heater is commanded ON.
DTC P2627 and DTC P2630 run continuously once the above conditions are met.