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Home >> Toyota >> 2004 >> Prius >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (SFI) - Diagnosis >> DTC P0116: Engine Coolant Temperature Circuit Range/Performance Problem >> Typical Enabling Conditions
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Typical Enabling Conditions

Case 1 

TYPICAL ENABLING CONDITIONS CASE 1

The monitor will run whenever the following DTCs are not present See LIST OF DISABLE A MONITOR 
Cumulative idle off period 250 seconds or more
Speed increase by => 19 mph(30 km/h) 10 times or more
Engine coolant temperature 35°C (95°F) or more, and less than 60°C (140°F)
Intake air temperature -6.7°C (20°F) or more

Case 2 

TYPICAL ENABLING CONDITIONS CASE 2

Engine coolant temperature 60°C (140°F) or more
Intake air temperature -6.7°C (20°F) or more
Stop and go Stop for 20 seconds or more and accelerate to more than 43.5 mph (70 km/h)
44 mph (70 km/h) in less than 40 seconds Decelerate from 40.4 mph (65 km/h) to 1.86 mph (3 km/h) within 35 seconds and stop for 10seconds