DTC P0140: O2 Sensor Circuit No Activity Detected (Bank 1/Sensor 2): DTC Detecting Condition

DTC P0140 DETECTING CONDITION TABLE

Item	Detecting Condition	Possible Cause
DTC Strategy	O2S signal interrupt by heater	Poor connection Open in harness HO2S (B1/S2) B1S2
Enable Conditions	Battery voltage > 10.7V Exhaust gas temperature (model) <900C After enough heated Time after dew point end detected > 10 sec
Threshold value	Counter of Δ 'Downstream O2S voltage' > 2V during 0. 04sec after heater on->off > 5 times
Diagnosis Time	Continuous (more than 76.5 sec. failure for every 90 sec. test)
MIL On Condition	2 Driving Cycles