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Home › Lexus › 2008 › LX 570 › Repair and Diagnosis › Engine Performance › System › Engine Control System - DTC P0010 - P0125 › DTC P0116 Engine Coolant Temperature Circuit Range / Performance Problem › Typical Malfunction Thresholds

Typical Malfunction Thresholds

ECT sensor cold start monitor: 

TYPICAL MALFUNCTION THRESHOLDS

ECT sensor value change Below 5°C (9°F)

ECT sensor soak monitor: 

TYPICAL MALFUNCTION THRESHOLDS

Difference between current ECT sensor value and previous ECT sensor value when engine stopped Below 3°C (5.4°F) [varies with ECT of last trip engine stop]
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