P0156 O2 Sensor Circuit (Bank 2/Sensor 2): DTC Detecting Condition

DTC P0156 DETECTING CONDITION TABLE

Item		Detecting Condition	Possible Cause
Case 1	DTC Strategy	Open circuit	Poor connection Open or short in signal circuit B2S2
	Enable Conditions	Battery voltage > 10.7V Exhaust gas temperature (model): 600°C ~ 900 °C After enough heated
	Threshold-Value	Internal resistance > 40kΩ
Case2	DTC Strategy	Feedback check
	Enable Conditions	Battery voltage > 10.7V Exhaust gas temperature (model) <900C After enough heated
	Threshold-Value	0.40V <Downstream O2S voltage <0.50V
	Diagnostic Time	600 sec
MIL ON Condition		2 driving cycle