P0158

Tests 1 - 4:

Tests 5 - 9:

Test 10:

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
- O2 Sensor signal shorted to voltage
- O2 Sensor signal circuit shorted to asd relay output (02 heater supply circuit)
- O2 Sensor operation
- O2 Sensor signal open
- O2 Sensor ground circuit open
- O2 Sensor heater supply circuit open
- O2 Sensor heater ground circuit open
- Intermittent condition
- PCM