General Information: DTC Detecting Condition

Item	Detecting Condition	Possible cause
DTC Strategy	No signal activity	Poor connection Open or Short to ground in harness HO2S (B1/S2) ECM
Enable Conditions	Battery voltage > 10.7V Lambda = 0.9 for 9 sec
Threshold value	Downstream O2S voltage < 0.65V
Diagnosis Time	9 sec
MIL On Condition	2 Driving Cycles