ECM/PCM 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 current check | 1. Poor connection 2. Open or short to ground in power circuit 3. Open in control circuit 4. Downstream O2S |
Enable Conditions |
•
10.7V < Battery voltage < 16.1V
•
IAT > -9.8℃
•
350℃ < Exhaust Gas temperature around downstream O2S < 600℃
•
Engine stop time > 120 sec. | |
Threshold Value |
•
Open circuit | |
Diagnosis Time |
•
- | |
Mil On Condition |
•
2 trips |
※ S1 : upstream oxygen sensor / S2 : downstream oxygen sensor
