P0133 1/1 O2 Sensor Slow Response

SYMPTOM
P-0133 1/1 O2 SENSOR SLOW RESPONSE

WHEN MONITORED
With engine temperature greater than 147 degrees F, after reaching vehicle speed of 10 mph, and throttle remaining open (off idle), for 2 minutes bring vehicle to a stop and allow engine to idle with transmission in drive (auto) or in neutral (manual).

SET CONDITION
The Oxygen Sensor Signal voltage is switching from below 0.27 volt to above 0.62 volt and back fewer times than required.

POSSIBLE CAUSES
- Engine mechanical problem
- 1/1 O2 sensor ground ckt high resistance
- 1/1 O2 sensor ground ckt poor connection
- 1/1 O2 sensor signal ckt high resistance
- 1/1 O2 sensor signal ckt poor connection
- 1/1 O2 sensor slow response
- Exhaust leak
- 1/1 O2S slow response does not reoccur