P1195 Slow 1/1 02S During Catalyst Monitor

SYMPTOM
P-1195 SLOW 1/1 O2S DURING CATALYST MONITOR

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

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

POSSIBLE CAUSES
- 1/1 Oxygen sensor ground circuit open
- Engine fluid consumption
- 1/1 Oxygen sensor connector observable defect
- 1/1 Oxygen sensor defective
- Exhaust system leaking
- PCM connector observable defect