P0133

P0133

Oxygen sensor in front of catalytic converter, dynamism

Diagnostic conditions
- Exhaust temperature > 350 °C
- Oxygen sensing active
- Engine speed 1000 ... 3000 1/min
- Engine load 14 .. 69%
- no excessive loading of activated charcoal filter
- No other oxygen-sensor faults stored

Possible fault causes
- Oxygen sensor in front of catalytic converter faulty (dynamically inert)
- Leak in exhaust system