ECM shows P0141 when it senses that resistance value of downstream O2 sensor heater is higher than threshold value.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Heater check | 1. Poor connection 2. Open or short to ground in power circuit 3. Open in control circuit 4. S2 |
Enable Conditions |
•
Battery voltage : 10.7V ~ 16.1V
•
Exhaust Gas temperature : 350~550℃ | |
Threshold Value |
•
Internal resistance value > Threshold value | |
Diagnostic Time |
•
6sec | |
MIL ON Condition |
•
3 driving cycle |
※ S1 : upstream oxygen sensor / S2 : downstream oxygen sensor
