If there is an abnormal response rate of HO2S under enable conditions, the PCM sets DTC P0133.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Response rate monitor(6-Pattern Monitoring). | 1. Poor connection 2. Leak or clog in intake air system 3. Injector 4. Fuel pressure 5. HO2S(S1) |
Enable Conditions |
•
Upstream O2 Sensor Ceramic temp greater than 720 ℃(1328 °F).
•
ECT greater than 40.5 ℃(104.9 °F).
•
Purge mass duration greater than 5 sec.
•
Engine load greater than 25% and less than 65%.
•
Catalyst temp greater than 400 ℃(752 °F).
•
No fuel cut off.
•
Fuel system status equal to Closed Loop.
•
Engine speed and Engine speed greater than 1320 rpm and less than 3000 rpm. | |
Threshold Value |
•
Compare ratio of Expected Area to Actual Area less than 0.35. | |
Diagnostic Time |
•
10 switches in Lambda setpoint steps(5 for Lean-Rich, 5 for Rich-Lean). | |
Mil On Condition |
•
2 driving cycles. |
※ S1 : upstream oxygen sensor / S2 : downstream oxygen sensor
