Heated Oxygen Sensor (Sensor-1 and Sensor-2) Inspection

Heated Oxygen Sensor (Sensor-1 and Sensor-2) Inspection

Heated Oxygen Sensor (Sensor-1 and Sensor-2) Removal and Installation
1) Disconnect sensor connector (1).
2) Using ohmmeter, measure resistance between terminals "VB" and "GND" of sensor connector.

Resistance of oxygen sensor-1 heater
2 - 6 ohms at 20 °C, 68 °F

Resistance of oxygen sensor-2 heater
4 - 10 ohms at 20 °C, 68 °F

If found faulty, replace oxygen sensor.
3) Connect sensor connector securely.