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 |
•
Signal check, high | 1. Poor connection 2. Open or short to ground in power circuit 3. Open in control circuit 4. S2 |
Enable Conditions |
•
Battery voltage is between 10.7V and 16.1V
•
Exhaust Gas temperature is between 350℃ and 550℃ | |
Threshold Value |
•
When Internal resistance is greater than threshold value (Calculated by exhaust gas temp.or heating power) | |
Diagnostic Time |
•
6 sec. | |
MIL ON Condition |
•
3 driving cycle |
