DTC Set Criteria

Engine coolant temperature was 45°F (7°C) or more immediately before the engine was stopped at the last drive. Engine coolant temperature was 45°F (7°C) or more when the engine started. Code will set if engine coolant temperature does not change more than 1.8°F (1°C) during first 5 minutes after engine is started. Time is not counted if intake air temperature is 140°F (60°C) or more, VAF sensor output frequency is 70 Hz or less, or fuel is being shut off. PCM runs monitor only once during drive cycle.