P0133

P0133

O2 Sensor Upstream, Dynamic Response

Diagnostic conditions
- Oxygen sensor temperature < 570 degrees C (1,058 degrees F)
- Oxygen sensing active
- Engine speed 1120 ... 4000 rpm
- Engine load 11 .. 60%
- Secondary air injection off
- No excessive loading of activated charcoal filter
- No other oxygen-sensor faults stored
- No tank leakage or tank vent fault stored

Possible fault causes
- Oxygen sensor upstream faulty (dynamically inert)
- Leak in exhaust system