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Home >> Chevrolet >> 2001 >> Metro >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls Self-Diagnostics - 1.3L >> Diagnostic Tests >> DTC P0601: Control Module Read Only Memory (ROM) >> Circuit Description

Circuit Description

PCM has detected a communication circuitry failure. DTC will set when an EEPROM programing error is detected. When DTC sets, MIL will illuminate after 2 consecutive ignition cycles in which diagnostic runs with active fault. PCM will record operating conditions at time of failure and store information in FREEZE FRAME/FAILURE RECORDS data buffer.

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