DTC Information: DTC Detecting Condition

Item		Detecting Condition	Possible Cause
Case 1	DTC Strategy	No signal activity	Poor connection Short to Power in signal circuit HO2S (S2) PCM Exhaust leaks
	Enable Conditions	Battery voltage greater than 10.7 V Lambda = 1.1 for 9 sec.
	Threshold Value	Downstream O2S voltage less than 0.65 V
Case 2	DTC Strategy	Oscillation check: Test condition is checked at every 500 sec after oscillation check is performed
	Enable Conditions	Downstream O2S voltage greater than 0.65 V for 100 sec. Fuel system status = Closed loop Engine speed greater than 1120 rpm and less than 3000 rpm Engine load greater than 20 % and less than 83 % Mass airflow greater than 20 kg/h EGT around downstream O2S greater than 700 °C (1292 °F) or O2S heater voltage greater than 9.2 V or Downstream O2S voltage greater than 0.5
	Threshold Value	If All secondary conditions met then Fuel system open loop control Lambda = 1.1 for 9 sec.
Diagnosis Time		10 sec.
MIL On Condition		2 Driving Cycles