| DTC Strategy |
- Check lambda signal amplitude (Slow response)
|
- Poor connector connection
- Leak or clog in intake air system
- Fuel pressure
- HO2S (bank1, sensor1)
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| Enable Condition |
- Sensor ceramic temperature is greater than 640°C (1184°F)
- Sensor forced stimulation active
- Normal auxiliary battery voltage (11 to 16V)
- Sensor operative readiness detected
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| Threshold Value |
- When the ratio of the actual oxygen sensor value to the model value is greater than 1
|
| Diagnostic Time |
- 22 fuel trim controller cycles
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| MIL ON Condition |
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