| DTC Strategy |
|
- Leak in intake or exhaust system
- Faulty fuel system.
- Front and rear HO2S connections reversed.
- Poor connection or damaged harness
- HO2S contamination
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| Enable Conditions |
- Downstream O2 sensor readiness detected
- Downstream O2 sensor pre-heating phase finished
- Catalyst temperature (model) is higher than 200°C (392°F).
- Downstream O2 sensor signal at entry into fuel cut-off is higher than 0.6V.
- No relevant failure
- Battery voltage is between 11V and 16V.
|
| Threshold Value |
- Downstream O2S voltage is lower than 800 mV/sec.
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| Diagnostic Time |
- 3 valid fuel cut-off phases
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| Mil On Condition |
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