P2271

P2271

Oxygen sensor signal behind catalytic converter, too rich

Diagnostic conditions
- Mass air flow throughput 25 kg/h ... 120 kg/h
- Oxygen sensing behind catalytic converter active
- Basic adaptation stabilized
- No secondary air system diagnosis
- No tank ventilation diagnosis
- No high loading of carbon filter
- No other oxygen-sensor faults

Possible fault causes
- Oxygen sensor faulty (dynamically inert)