On-Board Diagnostics: Snapshot
WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
The scan tool Snapshot feature can be triggered to capture and store engine parameters when a malfunction occurs. This stored information can be reviewed and compared to the typical scan tool data values or to data values taken from a similarly equipped known-good vehicle.