| DTC Strategy |
- Slow response - Check lambda signal amplitude
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- Leak in intake or exhaust system.
- Faulty fuel system
- Front and rear HO2S connections reversed.
- Contact resistance in connectors.
- HO2S contamination
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| Enable Conditions |
- Sensor tip temp. > 650°C(1202°F)
- Forced stimulation active
- No lambda control limitation
- Canister saturation limited < 0.5
- 990 < Engine speed(rpm) < 3490
- Engine load : 240 < MAF < 800mg/rev
- Coolant temperature > 74°C
- Vehicle speed > 4.82km/h (3mph)
- Ambient pressure > 700hPa
- Stable driving condition 1
- No relevant failure
- 11V < Battery voltage > 16V
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| Threshold Value |
- Integral (Lambda signal amplitude measured / Lambda signal amplitude of a slow sensor) > 1.0.
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| Diagnostic Time |
- 20 forced stimulation cycles
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| Fail Safe |
- Reset lambda adaptation and fuel trim adaptation.
- Front HO2S heater is controlled in open loop control.
- EVAP. Emission control function is controlled in minimum operation mode
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