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Home › Subaru › 2020 › Ascent Base › Repair and Diagnosis › Engine Performance › System › Engine Control System (Diagnostics) (2 Of 4) › Diagnostic Procedure with Diagnostic Trouble Code (DTC) › DTC P0605: Internal Control Module Read Only Memory (ROM) Error › General Driving Cycle

General Driving Cycle

Perform the diagnosis when the ignition switch is turned from OFF to ON.

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