P1195 1/1 O2 Sensor Slow During Catalyst Monitor

SYMPTOM
P-1195 SLOW UPSTREAM O2S DURING CATALYST MONITOR

WHEN MONITORED
With the engine running, coolant greater than 170 degrees F, open throttle, steady to slightly increasing vehicle speed > 18 MPH < 55 MPH, with a light load on the engine, for a period no less than five minutes.

SET CONDITION
The oxygen sensor signal voltage is switching from below 0.39 volt to above 0.6 volt and back fewer times than required.

POSSIBLE CAUSES
- 1/1 O2 sensor ground circuit open
- 1/1 O2 sensor connector terminals visibly def
- 1/1 O2 sensor defective
- Engine consumes oil or coolant
- Exhaust system component leaks
- PCM connector terminals visibly defective