DTC Information: DTC Detecting Condition

Item		Detecting Condition	Possible Cause
DTC Strategy	Case1	Maximum humidity plausibility check	Poor connector connection Faulty humidity sensor (MAFS) circuit Faulty humidity sensor (MAFS)
DTC Strategy	Case2	Rationality check
Enable Conditions	Case1	If the coolant temperature is below 70°C When the temperature difference between the humidity sensor internal temperature value and the ambient air temperature sensor is 6°C or higher General conditions for monitoring the reliability of the humidity sensor HFM chip heating not applied When there is no humidity sensor device error When there is no humidity sensor protocol error When the detection value of the ambient air temperature sensor is -10°C or less than 50°C When the coolant temperature value is -10°C or less than 60°C at engine start-up The difference between the coolant temperature value and the ambient air temperature sensor at engine start-up is less than 10°C The accumulation of crankshaft rotations is more than 100 times
Enable Conditions	Case2	General conditions for monitoring the reliability of the humidity sensor HFM chip heating not applied When there is no humidity sensor device error When there is no humidity sensor protocol error When the detection value of the ambient air temperature sensor is -10°C or less than 50°C When the coolant temperature value is -10°C or less than 60°C at engine start-up The difference between the coolant temperature value and the ambient air temperature sensor at engine start-up is less than 10°C The accumulation of crankshaft rotations is more than 100 times
Threshold Value	Case1	If there is an abnormality in the maximum relative humidity value
Threshold Value	Case2	If the difference between the maximum relative humidity and the minimum relative humidity is less than 5% The difference between the maximum HFM humidity temperature and the minimum HFM humidity temperature is 10°C or higher
Diagnostic Time		5s
MIL ON Condition		2 driving cycles