Heated Oxygen Sensor

INSPECT HEATER RESISTANCE OF OXYGEN SENSORS
a. Disconnect the oxygen sensor connector.
b. Using an ohmmeter, measure the resistance between the terminals +B and HT.

Resistance: 11 - 16 ohms at 20 °C (68 °F)
If the resistance is not as specified, replace the sensor.

c. Reconnect the oxygen sensor connector.