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Home >> Subaru >> 2024 >> Outback Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (2.5L) (Diagnostics) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0604: Internal Control Module Random Access Memory (Ram) Error >> General Description >> Diagnostic Method

Diagnostic Method

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION (DIAGNOSIS 1)

Malfunction Criteria Threshold Value
Written value to RAM Not equal to the reading value
JUDGMENT VALUE SPECIFICATION (DIAGNOSIS 2)

Malfunction Criteria Threshold Value
Check error of error correction code Detected

Time needed for diagnosis:  2 times

Malfunction indicator light illumination:  Illuminates as soon as a malfunction occurs.