P0133

Test 1:

Tests 2 - 5:

Test 6:

SYMPTOM
P0133-1/1 O2 SENSOR SLOW RESPONSE

WHEN MONITORED
Start and drive vehicle greater than 10 MPH with wide open throttle or just open for a minimum 200 seconds. Coolant greater than 70 °C (158 °F). EVAP Purge is active. Test performs in idle drive.

SET CONDITION
The oxygen sensor signal voltage is switching from below 0.33 volts to above 0.61 volts and back fewer times than required in 60 seconds. Two trip fault..

POSSIBLE CAUSES
- Intermittent condition
- Exhaust leak
- O2 sensor signal circuit voltage drop
- O2 sensor ground circuit voltage drop
- O2 sensor