| DTC Strategy |
- Slow response (Switching time check at entry in fuel cut off)
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- 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 |
- Coolant temperature >73°C (163°F)
- Downstream O2 sensor readiness detected
- Downstream O2 sensor pre-heating phase finished
- 400°C (752°F)< Catalyst temperature model
- 0.6V< Downstream O2 sensor signal at entry into fuel cut-off
- No relevant failure
- 11V < Battery voltage < 16V
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| Threshold Value |
- Average ratio between measured and maximum allowed rich to lean switching time entering fuel cut-off >1
|
| Diagnostic Time |
- 4 valid fuel cut-off phases
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| Mil On Condition |
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