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 > 10.7V Exhaust gas temperature (model) < 800°C (1472°F) Heater control enabled
Case1	Enable Conditions	Time after fuel cut-off > 3.0s B1S2 sensor voltage > 0.2V
Threshold Value	0.1 sec
Diagnostic Time	Sensor voltage > 0.2V
Case2	Enable Conditions	Sensor voltage : 0.4~0.6V
Diagnostic Time	5 sec
Case3	Enable Conditions	Exhaust gas temperature (model) > 600°C (1112°F)
Threshold Value	Internal resistance > 20 kΩ
MIL ON Condition	2 driving cycle

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