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Home >> Chevrolet >> 2001 >> Corvette Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 5.7L >> Diagnostic Tests >> DTC P1258: Engine Coolant OVERTEMPERATURE - Protection Mode Active >> Code Enable Criteria

Code Enable Criteria

For DTC to run, engine must be running. DTC will set when PCM detects coolant temperature is 268°F (131°C) or more. When DTC is set, PCM will disable 2 groups of 4 cylinders by turning OFF fuel injectors. By switching between 2 groups of cylinders, PCM is able to reduce coolant temperature.

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