| DTC Strategy |
- Signal plausibility with lean mixture (during fuel cut-off)
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- Poor connection or damaged harness
- HO2S contamination
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| Enable Conditions |
- Downstream O2 Sensor operative readiness is detected.
- Integrated mass air flow since last fuel cut-off is greater than 500g.
- Integrated mass air flow since fuel cut off begin is between 12g and 250g.
- Battery voltage is between 10V and 16V.
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| Threshold Value |
- Downstream HO2S voltage is higher than 0.2V during fuel cut-off phase.
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| Diagnostic Time |
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| MIL On Condition |
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