P0158

Tests 1 - 4:

Tests 5 - 8:

SYMPTOM
P0158-O2 SENSOR 2/2 VOLTAGE HIGH

TEST NOTE
This symptom is diagnosed using the test P0132-O2 SENSOR 1/1 VOLTAGE HIGH.

WHEN MONITORED
The engine running for 119 seconds. O2 Sensor Heater Temperature is greater than 496 °C (925 °F). Battery voltage greater than 10.99 volts.

SET CONDITION
The Oxygen Sensor voltage is above 3.9902 volts for 30 seconds. One trip fault.

POSSIBLE CAUSES
- Intermittent condition
- O2 sensor
- O2 sensor return circuit open
- O2 sensor signal shorted to voltage
- O2 sensor signal open
- PCM return circuit
- PCM signal circuit