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Home >> Lexus >> 2013 >> IS 250 Base, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010-P0171)) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance Problem >> Typical Enabling Conditions
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Typical Enabling Conditions

ALL

Monitor runs whenever following DTCs are not present None
COLD START MONITOR

Battery voltage 10.5 V or more
Time after engine start 1 second or more
ECT at engine start Less than 60°C (140°F)
ECT sensor circuit fail (P0115, P0117, P0118 and P0125) Not detected
IAT sensor circuit fail (P0112 and P0113) Not detected
Thermostat fail (P0128) Not detected
Soak time 0 second or more
Accumulated MAF 5656 g or more
Fuel cut Off
Difference between ECT at engine start and IAT Less than 40°C (72°F)
SOAK MONITOR

Battery voltage 10.5 V or more
Engine Running
ECT sensor circuit fail (P0115, P0117, P0118 and P0125) Not detected
IAT sensor circuit fail (P0112 and P0113) Not detected
Thermostat fail (P0128) Not detected
Soak timer circuit fail (P2610) Not detected
Soak time 5 hours or more
Either of the following conditions is met 1 or 2
1. ECT 60°C (140°F) or more
2. Accumulated MAF 11312 g or more