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Home >> Lexus >> 2010 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010-P0340) >> SFI System >> DTC P0116: Engine Coolant Temperature Circuit Range / Performance Problem >> Typical Enabling Conditions
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Typical Enabling Conditions

Monitor will run whenever these DTCs are not present None
COLD START MONITOR:

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)
ECT sensor circuit fail (P0115, P0117, P0118, P0125) Not detected
IAT sensor circuit fail (P0112, P0113) Not detected
Soak time 0 seconds or more
Accumulated MAF 1959 g or more
Fuel cut OFF
Difference between ECT at engine start and IAT Less than 40°C (72°F)
SOAK MONITOR:

Battery voltage 10.5 V or more
Engine Running
ECT sensor circuit fail (P0115, P0117, P0118, P0125) Not detected
IAT sensor circuit fail (P0112, P0113) Not detected
Soak time 5 hours or more
When either condition below is met -
- ECT at engine start 60°C (140°F) or more
- Accumulated MAF 3993 g or more