LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2020 >> Outback Premium >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Diagnostics) (2.5L) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0604: Internal Control Module Random Access Memory (Ram) Error >> General Description >> Diagnostic Method
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.