P1197

Test 1:

Tests 2 - 6:

Tests 7 - 11:

Tests 12 - 16:

SYMPTOM
P1197-1/2 O2 SENSOR SLOW DURING CATALYST MONITOR

TEST NOTE
All symptoms listed above are diagnosed using the same tests. The title for the tests will be P1195-1/1 O2 SENSOR SLOW DURING CATALYST MONITOR.

POSSIBLE CAUSES
- O2S sensor ground circuit voltage drop
- O2S signal circuit voltage drop
- Exhaust leak
- Excessive engine blow by
- O2S heater feed circuit open
- O2S heater ground circuit open
- Wiring harness intermittent problem
- O2 sensor