| Main Action |
- Signal plausibility during fuel cut-off
|
- Poor connection or damaged harness
- HO2S contamination
- Faulty three way catalytic converter
|
| Prerequisite condition |
- Downstream O2 sensor operative readiness is detected.
- Integrated mass air flow (MAF) since last fuel cut-off is greater than 500g.
- Integrated MAF since fuel cut-off begins is between 12g and 250g.
- Battery voltage is between 10V and 16V
|
| Threshold Value |
- Downstream HO2S signal voltage during fuel cut-off phase is greater than 0.2V.
|
| Diagnostic Time |
|
| Mil On Condition |
|