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Home >> Lexus >> 2009 >> ES 350 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control (SFI) System (Diagnostic (Codes P0010-P043E)) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance Problem >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

ECT SENSOR COLD START MONITOR:

ECT sensor value change Less than 5°C (41°F)
ECT SENSOR SOAK MONITOR:

Difference between current ECT sensor value and previous ECT sensor value when engine stopped Less than 5°C (41°F)