Freeze Frame Data

ECM records the engine status at detection when it detects DTCs. (Freeze frame data) Freeze frame data is recorded on up to a second detected DTC, and not recorded on a third detected DTC and later.

NOTE:

As the freeze frame data is recorded with DTC detected, permanent monitoring cannot be performed.
For the first detected DTC, time series freeze frame data is recorded. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>FREEZE FRAME DATA>NOTE>TIME SERIES FREEZE FRAME DATA .
When performing diagnosis, you can utilize the freeze frame data to guess the vehicle status when the DTC was detected.
For detailed operation procedures, refer to "Freeze Frame Data". Ref. to COMMON(DIAG)>FREEZE FRAME DATA>OPERATION .

Courtesy of SUBARU OF AMERICA, INC.