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Home >> Lexus >> 2017 >> LS 460 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - Diagnostic Codes (P0010-P0230) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance [09/2015 - ] >> Typical Enabling Conditions
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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)
P0125 (Insufficient Coolant Temperature for Closed Loop Fuel Control)
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 second or more
Accumulated MAF 13239 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)
P0125 (Insufficient Coolant Temperature for Closed Loop Fuel Control)
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 26478 g or more