| DTC Strategy |
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- Poor connector connection
- Faulty HO2S (Bank1, Sensor1) heater
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| Enable Conditions |
Case1 |
- Normal battery voltage (10 to 16V)
- Time after sensor heating is less than 35s
- Internal resistance signal is valid
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| Case2 |
- Normal battery voltage (10 to 16V)
- EGT around FO2S (model) is more than 450°C (842°F)
- Power of sensor heating is more than 90%
- Sensor heating time is more than 50s
- Fuel system status is no fuel cut-off over 50s
- Internal resistance signal is valid
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| Case3 |
- Normal battery voltage (10 to 16V)
- EGT around FO2S (model) is more than 450°C (842°F)
- Sensor heating time is more than 50s
- Fuel system status is no fuel cut-off over 50s
- Internal resistance signal is valid
|
| Threshold Value |
Case1 (start phase diagnosis) |
- Ceramic temperature is less than 720°C (1, 328°F) for 35s after heating start
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| Case2 (permanent diagnosis) |
- Ceramic temperature is less than 720°C (1, 328° F)
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| Case3 (low temperature diagnosis) |
- Ceramic temperature is less than 639°C (1, 182° F)]
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| Diagnostic Time |
Case1 |
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| Case2 |
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| Case3 |
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| MIL ON Condition |
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