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Home >> Lexus >> 2011 >> IS 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010-P014F)) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance Problem >> Typical Enabling Conditions
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Typical Enabling Conditions

ECT SENSOR COLD START MONITOR

Monitor runs whenever following DTCs are not present None
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 (P0115, P0117, P0118, P0125) OK
IAT sensor circuit (P0112, P0113) OK
Thermostat fail (P0128) OK
Soak time 0 second or more
Accumulated MAF 1564 g or more
Engine Running
Fuel cut OFF
Difference between ECT at engine start and IAT Less than 40°C (72°F)
ECT SENSOR SOAK MONITOR

Monitor runs whenever following DTCs not present None
Battery voltage 10.5 V or more
Engine Running
ECT sensor circuit (P0115, P0117, P0118) OK
IAT sensor circuit (P0112, P0113) OK
Thermostat fail (P0128) OK
Soak timer circuit (P2610) OK
Soak time 5 hours or more
Either of the following conditions is met: (a) or (b)
(a) ECT at engine start 60°C (140°F) or more
(b) Accumulated MAF 3232 g or more