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Home >> Lexus >> 2012 >> IS 250 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Diagnostic Codes (P0010-P0175)) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance Problem >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

COLD START MONITOR

ECT sensor value change Less than 5°C (9°F)
SOAK MONITOR

Difference between current ECT sensor value and pervious ECT sensor value when engine stopped Less than 5°C (9°F) (varies with ECT of last trip engine stop)
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