| DTC Strategy |
- Check catalyst oxygen storage capacity by evaluation downstream O2 sensor fluctuations
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- Exhaust gas leaks
- Faulty rear HO2S
- Faulty three way catalyst converter
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| Enable Conditions |
- Coolant temperature >74°C (165°F)
- Vehicle speed > 5km/h (3MPH)
- Ambient pressure > 700 hPa (525mmHg)
- 1200rpm < Engine speed < 3500rpm
- 200 < Mass air flow(mg/rev.) < 780
- Current engine speed - Mean of engine speed < 600 RPM
- Current mass air flow - Mean of mass air flow < 300 mg/rev
- Current lambda correction mean value - Mean of lambda correction mean value < 8%
- Canister load < 0.5
- 300°C (572°F) ≤ Catalyst temp, model ≤ 730°C (1346°F)
- Lambda control/Forced stimulation active
- (VLS_DOWN > 0.68V or < 0.21V) or Catalyst model temp > 500°C (932°F)
- Engine operating state Part load
- No relevant failure
- 11V < Battery voltage < 16V
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| Threshold Value |
- Integral of VLS_DOWN - VLS_DOWN filtered > thd.
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| Diagnostic Time |
- 20 forced stimulation cycles
|