DTC P0160 Ho2S Circuit No Activity Detected (Bank 2 / Sensor 2): DTC Detecting Condition

DTC DETECTING CONDITION

Item		Detecting Condition	Possible cause
DTC Strategy		Monitor signal voltage	Poor connection Open in harness HO2S (B2/S2) PCM
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

VOLTAGE REFERENCE CHART

Test Condition	HO2S Voltage (Sensor1)	HO2S Voltage (Sensor2)
HO2S Signal at idle after warm-up	Signal is commonly switching from rich to lean more than 3 times in 10 sec.	Signal is commonly above 0.6V.
HO2S signal at open circuit (Pumping current OFF)	Approx. 0.45V
HO2S signal at open circuit (Pumping current ON)	Approx. 3.5V