| DTC Strategy |
- Check lambda signal amplitude (Slow response)
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- Poor connector connection
- Leak or clog in intake air system
- Fuel pressure
- HO2S (Bank1, Sensor1)
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| Enable Conditions |
- Sensor ceramic temperature is greater than 800°C (1472°F)
- Sensor forced stimulation active
- When the upstream oxygen sensor heating time is more than 30 seconds, it is in the maximum heating or normal heating state.
- Normal 12V battery voltage (11 to 16V)
- Sensor operative readiness detected
- The difference between the set value and the actual lambda value is less than 0.25
- Coolant temperature above 50°C (122°F)
- Catalyst temperature 520 to 957°C (968 to 1754.6°F)
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| Threshold Value |
- When the ratio of the actual oxygen sensor value to the model value is greater than 1
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| Diagnostic Time |
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| MIL ON Condition |
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