| Main Action |
- Check HO2S signal amplitude
|
- Leakage in intake or exhaust system
- Poor connection or harness damage
- HO2S contamination
|
| Prerequisite Condition |
- HO2S operative readiness is detected with sensor tip temperature over 640°C (1184°F).
- HO2S forced simulation is functioning
- DTC P042000 (Catalyst diagnosis) monitoring is activated with DTC P013300 monitoring synchronized
|
| Threshold Value |
- Integral (Lambda signal amplitude measured/Lambda signal amplitude of a slow sensor) is greater than 1.0.
|
| Diagnostic Time |
- 20 Lambda Controller Cycles
|
| MIL-On Condition |
|