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Home › Subaru › 2015 › Impreza Base, 4D Sedan, Automatic CVT Trans › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnostic Trouble Code (DTC) Detecting Criteria (Except Hybrid) › Diagnostic Trouble Code (DTC) Detecting Criteria › DTC P0604: Internal Control Module Random Access Memory (Ram) Error › General Driving Cycle

General Driving Cycle

Perform the diagnosis as soon as the ignition switch is turned to ON.

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