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Home >> Subaru >> 2021 >> WRX Limited, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2.0L) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0604: Internal Control Module Random Access Memory (Ram) Error >> General Driving Cycle
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

General Driving Cycle

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