P1196

Test 1:

Tests 2 - 7:

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

TEST NOTE
This symptom is diagnosed using the test P1195 - 1/1 O2 SENSOR SLOW DURING CATALYST MONITOR.

WHEN MONITORED
With the engine running, engine coolant temperature greater than 170 °F, open throttle, steady to slightly increasing vehicle speed greater than 18 mph but less than 55 mph, with a light load on the engine, for a period no less than 5 minutes.

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

POSSIBLE CAUSES
- Exhaust leak
- Excessive engine blowby
- O2S sensor ground circuit voltage drop
- O2S signal circuit voltage drop
- Wiring harness intermittent problem
- O2S