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Home >> Lexus >> 2012 >> LS 460 AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (1UR-FSE) (Diagnostic Codes (P0010-P0332)) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance Problem >> Typical Enabling Conditions

Typical Enabling Conditions

ECT SENSOR COLD START MONITOR:

Monitor runs whenever following DTCs not present P00AC, P00AD, P0112, P0113 (Intake Air Temperature Sensor)
P0115, P0117, P0118 (Engine Coolant Temperature Sensor)
P0128 (Coolant Thermostat)
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)
Soak time 0 or more
Accumulated MAF 1911 g or more
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 P00AC, P00AD, P0112, P0113 (Intake Air Temperature Sensor)
P0115, P0117, P0118 (Engine Coolant Temperature Sensor)
P0128 (Thermostat)
P2610 (Soak Timer)
Battery voltage 10.5 V or more
Engine Running
Soak time 5 hours or more
Either (a) or (b) condition met -
(a) ECT 60°C (140°F) or more
(b) Accumulated MAF 3692 g or more