General Information: DTC Detecting Condition

Item		Detecting Condition	Possible Cause
Case1	DTC Strategy	Open circuit	Poor connection Open or short power/ground in signal circuit B1S1
	Enable Conditions	Dew point end detected Target lambda = 1 Battery voltage > 10.7V Exhaust gas temperature (model): 600°C ~ 900°C Upstream O2S Heater control On
	Threshold Value	Internal resistance > 20kΩ
Case2	DTC Strategy	Feedback check
	Enable Conditions	Dew point end detected Target lambda = 1 Battery voltage > 10.7V Exhaust gas temperature (model) < 900C Upstream O2S Heater control On
	Threshold Value	0.4V < Upstream O2S voltage < 0.6V
	DiagnosticTime	5 sec
MIL ON Condition		2 driving cycle