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 flashes the malfunction indicator lamp (MIL) the first time catalytic converter damage can occur.
The PCM illuminates the MIL the second time the diagnostic fails.
The PCM records the operating conditions at the time the diagnostic fails. This information is stored in the Freeze Frame buffer. The PCM also freezes the engine speed at Misfire and the Load at Misfire scan tool data parameters at the time the MIL illuminates.