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	No signal activity	Poor connection Open or short in signal circuit B1S2 ECM/PCM
Enable Conditions	After oscillation check finished
Threshold Value	No signal activity
MIL ON Condition	2 driving cycle
B1S1: upstream oxygen sensor/B1S2: downstream oxygen sensor