| DTC Strategy |
- Monitor the slow response of upstream oxygen sensor
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- Poor connection
- Leak or clog in intake air system
- Injecto r
- Fuel pressure
- Faulty upstream O2 sensor
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| Enable Conditions |
- Tip temperature of upstream oxygen sensor is higher than 730°C (1346°F)
- Coolant temperature is higher than 40°C (104°F)
- Operate the purge valve continually (5s)
- Engine load is between 25% and 65%
- Catalyst temperature is higher than 400°C (752°F)
- Engine speed is between 1320 RPM to 3520prm
|
| Threshold Value |
- Ratio of expected area to actual area is less than 0.3
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| Diagnostic Time |
- Change lean into rich (3 times), rich into lean (3 times) and to tal: 6 times
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| MIL ON Condition |
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