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Home >> Lexus >> 2014 >> IS 250 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (4GR-FSE) - Diagnostic Codes (1 Of 5) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance [06/2014 - 08/2015] >> Typical Enabling Conditions
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Typical Enabling Conditions

ALL

Monitor runs whenever the following DTCs are not stored None
COLD START MONITOR

All of the following conditions are met -
Battery voltage 10.5 V or higher
Time after engine start 1 second or more
Engine coolant temperature at engine start Less than 60°C (140°F)
Soak time 0 seconds or more
Accumulated mass air flow 6756 g or more
Fuel cut Off
Engine coolant temperature sensor circuit fail (P0115, P0117, P0118, P0125) Not detected
Intake air temperature sensor circuit fail (P0112, P0113) Not detected
Thermostat fail (P0128) Not detected
Difference between engine coolant temperature at engine start and intake air temperature Less than 40°C (72°F)
SOAK MONITOR

All of the following conditions are met -
Battery voltage 10.5 V or higher
Engine Running
Soak time 5 hours or more
Either of the following conditions is met (a) or (b)
(a) Engine coolant temperature 60°C (140°F) or higher
(b) Accumulated mass air flow 13512 g or more
Engine coolant temperature sensor circuit fail (P0115, P0117, P0118, P0125) Not detected
Intake air temperature sensor circuit fail (P0112, P0113) Not detected
Thermostat fail (P0128) Not detected
Soak timer circuit fail (P2610) Not detected