General Information: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item		Detecting Condition	Possible Cause
		DTC Strategy		Signal check, wiring interruption	Poor connection Open or short in signal circuit B1S1 ECM
		General Enable Conditions		Dew point end detected Required lambda = 1 Battery voltage > 10.7 V Exhaust gas temperature (model) < 800 °C Heater control enabled
Case 1	Enable Conditions	Time after fuel cutoff > 3.0 s B1S2 sensor voltage > 0.2 V
	Threshold Value	0.1 sec
	Diagnostic Time	Sensor voltage > 0.2 V	Diagnostic Time	• 5 sec
Case 2	Enable Conditions	Sensor voltage : 0.4 ~ 0.6 V	• Exhaust gas temperature (model) > 600°C
Case 2	Diagnostic Time	sec
Case3	Enable Conditions	Exhaust gas temperature (model) > 600 °C
Case3	Threshold Value	Internal resistance > 20 kΩ
MIL ON Condition		driving cycle

* B1S1 : upstream oxygen sensor/B1S2 : downstream oxygen sensor