P0158

Tests 188 - 192:

Tests 193 - 198:

Test 199:

SYMPTOM LIST
P0158-2/2 O2 SENSOR SHORTED TO VOLTAGE

TEST NOTE:
All symptoms listed above are diagnosed using the same tests. The title for the tests will be P0132-1/1 O2 SENSOR SHORTED TO VOLTAGE.

WHEN MONITORED
With battery voltage greater than 10.4 volts, engine running for more than 4 minutes and coolant temperature above 180°F.

SET CONDITION
The oxygen sensor voltage is above 1.5 volts.

POSSIBLE CAUSES
- O2S heater feed circuit open
- O2S heater ground circuit open
- O2S sensor ground circuit open
- O2S signal circuit open
- O2S signal circuit short to voltage
- Wiring harness intermittent defect
- O2S defective