P1195

Tests 1 - 3:

Tests 4 - 5:

SYMPTOM
P1195 1/1 O2 SENSOR SLOW DURING CATALYST MONITOR

WHEN MONITORED
With the engine running, coolant greater than 170 °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 oxygen sensor connector
- 1/1 oxygen sensor
- 1/1 oxygen sensor ground circuit open
- Engine fluid consumption
- Exhaust system leaking
- PCM connector