Action Taken When the DTC Sets

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

The PCM illuminates the malfunction indicator lamp (MIL) during the second key cycle in which the DTC sets.
The PCM stores the conditions which were present when the DTC set as Freeze Frame data.
The PCM will turn the HO2S 2 heater OFF.