Freeze-Frame Data
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 Isuzu VehiCROSS, 2000 Isuzu Trooper, 2000 Isuzu Rodeo, 2000 Isuzu Hombre, and 2000 Isuzu Amigo. However, it is still accessible from the selected car via links, so may be relevant.
Engine operating conditions that cause MIL to illuminate are recorded in PCM memory. This record, called freeze frame data, is a snap shot of the driving conditions that are recorded on the PCM freeze frame buffer and is constantly updated with the most current information.
Freeze frame data can only be overwritten with misfire or fuel trim malfunction data. The data can only be erased by clearing associated history DTCs.