| Main Action |
- Check Lambda signal amplitude - slow response
|
- Poor connection
- Faulty HO2S
- Faulty ECM
|
| Prerequisite condition |
- Upstream O2 sensor operative readiness is detected (Sensor tip temperature is higher than 680°C (1256°F) or sensor heater maximum or normal heating for over 30 seconds)
- O2 sensor forced stimulation is active.
- P042000/P043000 (Catalyst Diagnosis) monitoring is active.
- P013300 diagnosis is synchronized with P042000 monitoring.
- Battery voltage is between 11V and 16V.
|
| Threshold Value |
- Integral value (Lambda signal amplitude measured/Lambda signal amplitude of a slow sensor) is greater than 1
|
| Diagnosis Time |
- 17 fuel trim controller cycles
|
| MIL On Condition |
|