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Home >> Lexus >> 2009 >> GS 450h >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control (SFI) System (Diagnostic Codes (P0010-P0365)) >> 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 these 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)
IAT sensor circuit (P0110, P0112, P0113) OK
Soak time 0 seconds or more
Accumulated MAF 1032 g or more
Fuel cut OFF
Difference between ECT at engine start and IAT Less than 40°C (104°F)
ECT SENSOR SOAK MONITOR:

Monitor runs whenever these DTCs are not present None
Battery voltage 10.5 V or more
Engine Running
IAT sensor circuit (P0110, P0112, P0113) OK
Soak time 5 hours or more
ECT at engine start 60°C (140°F) or more
Accumulated MAF 2105 g or more