DTC Information: DTC Detecting Condition

Item	Detecting Condition	Possible cause
DTC Strategy	Monitor the current through the heater	Poor Connection HO2S (B2/S1) PCM
Enable Conditions	Engine Running longer than 60 sec. Heater Duty Cycle greater than 40% Max. Duty Cycle - Min. Duty Cycle less than 5%
Threshold value	Filtered Heater Current less than threshold value
Diagnosis Time	Continuous (More than 2.5 second failure for every 5 second test)
MIL On Condition	2 Driving Cycles