P0140: O2 Sensor Circuit Slow Response (Bank 1/Sensor 2): DTC Detecting Condition

DTC DETECTING CONDITION CHART

Item		Detecting Condition	Possible cause
DTC Strategy		Monitor signal voltage	Poor Connection Open in harness HO2S(B1/S2) ECM
Enable Conditions		Battery voltage ≥ 10V Engine running ≥ 60 sec. Engine warm-up state No disable faults
Threshold value	Case 1	1.2V ≤ Voltage of HO2S 3.9V (at pumping current ON)
Threshold value	Case 2	0.415V Voltage of HO2S 0.515V (at pumping current OFF)
Diagnosis Time		Continuous (more than 76.5 sec.failure for every 90 sec. test)
MIL On Condition		2 driving cycles