DTC P0153: Ho2S Circuit Slow Response Bank 2/Sensor 1: DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item	Detecting Condition	Possible cause
DTC Strategy	Response time from lean to rich (TLR) & from rich to lean (TRL) are monitored when A/F is intentionally changed.	Poor connection HO2S deteriorated Leak in exhaust system Defective ECM
Enable Conditions	Closed loop Engine coolant > 60°C Engine speed 1250~3500 rpm Load value 20% ~ 60% Vehicle speed > 40 kph Fuel cut "off"
Threshold value	From lean to rich (TLR) > 0.95 sec From rich to lean (TRL) > 0.95 sec
Diagnosis Time	8 sec continuous
MIL On Condition	2 driving cycles