P1196

Tests 1 - 2:

Tests 3 - 6:

Test 7:

SYMPTOM
P1196 - 2/1 O2 SENSOR SLOW DURING CATALYST MONITOR

WHEN MONITORED
With the engine running, coolant> 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
- Oxygen sensor ground circuit open
- Engine fluid consumption
- Oxygen sensor connector
- Oxygen sensor
- O2 sensor heater failure
- Exhaust system leaking
- PCM connector