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Home >> Subaru >> 2023 >> WRX Base, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0604: Internal Control Module Random Access Memory (Ram) Error >> General Description >> General Driving Cycle
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General Driving Cycle

Perform the diagnosis immediately after ignition switch ON.

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