If there is abnormal response rate of HO2S under enable conditions, ECM sets DTC P0133.
(This DTC might be caused by the malfunction of Heater circuit, so, check the heater circuit first.)
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Rationality check | 1. Poor connection 2. Leak or clog in intake air system 3. Injector 4. Fuel pressure 5. S1 |
Enable Conditions |
•
Dew point end detected
•
Fuel feed back control active
•
Battery voltage is higher than 11V
•
Exhaust Gas temperature is higher than 280℃ and lower than 800℃.
•
No injector error
•
No upstream O2 sensor heater error
•
Engine speed is higher than 1800rpm and lower than 2800rpm.
•
Engine load is higher than 20% and lower than 65%. | |
Threshold Value |
•
Cycle period of S1 signal is higher than 1.75 sec | |
Diagnostic Time |
•
11 cycle | |
MIL ON Condition |
•
2 driving cycle |
