On Board Diagnosis Logic

If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will rise.

When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is indicated.

This self-diagnosis has the one trip detection logic.

DTC DETECTING CONDITION CHART

DTC No.	Trouble diagnosis name	DTC detecting condition	Possible cause
P1217	Engine over temperature (Overheat)	Cooling fan does not operate properly (Overheat). Cooling fan system does not operate properly (Overheat). Engine coolant was not added to the system using the proper filling method. Engine coolant is not within the specified range.	Cooling fan (crankshaft driven) Radiator hose Radiator Radiator cap Water pump Thermostat Engine coolant temperature sensor For more information, refer to [P1217 ENGINE OVER TEMPERATURE ].

CAUTION: When a malfunction is indicated, always replace the coolant. Refer to [CHANGING ENGINE COOLANT ]. Also, replace the engine oil.

Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Always use coolant with the proper mixture ratio. Refer to [RECOMMENDED FLUIDS AND LUBRICANTS ].
After refilling coolant, run engine to ensure that no water-flow noise is emitted.