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Home >> Lexus >> 2011 >> LX 570 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010 - P0128)) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance Problem (08/2011 - ) >> Typical Enabling Conditions

Typical Enabling Conditions

ECT SENSOR COLD START MONITOR:

Monitor runs whenever following DTCs not stored 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)
IAT sensor circuit fail (P0110, P0112, P0113) Not detected
ECT sensor circuit fail (P0115, P0117, P0118, P0125) Not detected
Soak time 0 seconds or more
Accumulated MAF 1968 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 stored None
Battery voltage 10.5 V or more
Engine Running
IAT sensor circuit fail (P0110, P0112, P0113) Not detected
ECT sensor circuit fail (P0115, P0117, P0118, P0125) Not detected
Soak time 5 hours or more
Either (a) or (b) condition met -
(a) ECT 60°C (140°F) or more
(b) Accumulated MAF 4165 g or more