DTC P0159: Ho2S Circuit Slow Response Bank 2/Sensor 2: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item		Detecting Condition & Limp Home	Possible cause
DTC Strategy		Rationality Check	Poor connection HO2S deteriorated Leak in exhaust system Defective ECM
Case 1	Enable Conditions	Fuel cut "on" Engine coolant > 77°C Circuit voltage Vr > 0.45V
	Threshold value	Response Rate, (TRL) is greater than or equal to 1 sec
	Diagnosis Time	3 sec continuous
Case 2	Enable Conditions	Engine speed > 1500 rpm Load value > 30% Vehicle speed > 30 kph time that above conditions are fulfilled > 10 sec after fuel cut event
	Threshold value	Vr max - Vr min < 0.078V (Circuit voltage difference during secondary parameter condition)
	Diagnosis Time	Continuous
MIL On Condition		2 driving cycles