DTC P0140 H02S Circuit No Activity Detected (Bank 1/Sensor 2): DTC Detecting Condition

DTC DETECTING CONDITION AND POSSIBLE CAUSES

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