| DTC Strategy |
- Erratic Air/Fuel correction value
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- Fuel leakage or stuck in injector
- Air leakage in cylinder
- Ignition system error in cylinder
- Abnormal compression pressure in cylinder
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| Enable Condition |
- Engine coolant temperature is higher than 68.3°C (146.84°F)
- Catalyst temperature model is lower than 900°C (1652°F)
- Engine speed is between 1152 RPM and 2800 RPM
- Fuel mass set-point is between 11mg/revolution and 27mg/revolution
- Vehicle speed is greater than 25 km/h (15.6 mph)
- No relevant failure (Upstream O2 sensor, Injector valve, ETC in limp home state)
- Measured Tip temperature is higher than 680°C (1256°F)
- Engine coolant temperature is higher than 0°C (32°F)
- Lambda set-point is between 1.03 and 0.97
- Stable driving condition:
- Actual RPM is 60 RPM lower than filtered RPM
- Actual mass air is 80mg/revolution lower than filtered mass air
- Actual lambda is 5% lower than filtered lambda value
- Fuel cut off not active
- Catalyst purge after fuel cut off not active
- No misfire detected
- Catalyst diagnosis finished
- Barometric pressure (BARO) is higher than 75 kPa
- Full load not active
- Crankshaft segment adaptation finished
- No gear transition
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| Threshold Value |
- Cylinder #1 individual A/F deviation is greater than threshold
- Previous long term fuel trim deviation is greater than 17% or current cylinder deviation is lower than -19%
- Long term fuel trim deviation is greater than 14% or lower than -16%
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| Diagnostic Time |
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| MIL ON Condition |
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