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