P0158

Tests 1 - 6:

Tests 7 - 9:

SYMPTOM
P0158-2/2 O2 SENSOR SHORTED TO VOLTAGE

TEST NOTE
This symptom is diagnosed using the test 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
- Intermittent condition
- O2 sensor operation
- O2 sensor signal shorted to voltage
- O2 sensor signal circuit shorted to O2 heater relay output circuit
- O2 sensor signal open
- O2 sensor ground circuit open
- PCM