P0141 O2 Sensor Heater Circuit (Bank 1/Sensor 2): DTC Detecting Condition

DTC P0141 DETECTING CONDITION TABLE

Item	Detecting Condition	Possible Cause
DTC Strategy	Heater current check	Poor connection Open or short to ground in signal circuit B1S2 ECM/PCM
Enable Conditions	Catalyst temperature (model) 200~550°C (392~1022°F) Intake air temperature > -7°C (19.4°F) Battery voltage 10.7~16.1V
Threshold Value	Internal resistance > threshold f (cat. temp., heater power)
Diagnostic Time	Above 6 sec
MIL ON Condition	2 driving cycle
B1S2: upstream oxygen sensor/B1S2: downstream oxygen sensor