Freeze Frame Data: Notes

WARNING: This page is about a different car, the 2002 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.

Engine operating conditions are required to be captured and stored in ECM memory whenever a malfunction is detected. Data captured in this manner is called FREEZE FRAME data. Freeze frame data is similar to a single record of operating conditions. Whenever a malfunction is detected, corresponding record of operating conditions is recorded in the freeze frame buffer. ECM can store freeze frame data for 3 different malfunctions.

Freeze frame data can only be overwritten with data associated with a misfire or fuel trim malfunction. Misfire data takes priority over all other data because of its possible part-damaging (oxygen sensors, catalytic converters, etc.) effects. Freeze frame data will not be erased unless associated DTC is cleared from ECM memory.