DTC P1624: Customer Snapshot Data Available: Description
WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
The customer-snapshot feature lets the customer store the Powertrain Control Module (PCM) data when a driveability problem occurs. The feature permits several snapshots during each ignition cycle. When the customer requests the snapshot, the PCM stores the data, and sets DTC P1624. The PCM also illuminates the Malfunction Indicator Lamp (MIL) for a specific length of time in order to tell the customer that the data has been stored.