Oxygen Sensor: Testing and Inspection

INSPECTION
(Bank 1 Sensor 1, Bank 1 Sensor 2)

INSPECT HEATER RESISTANCE OF HEATED OXYGEN SENSORS
(a) Disconnect the oxygen sensor connector.





(b) Using an ohmmeter, measure the resistance between the terminals +B and HT.

Resistance: At 20° C (68° F): 11 - 16 Ohms

If the resistance is not as specified, replace the sensor

Torque: 20 N.m (200 kgf.cm, 14 ft.lbf)

(c) Reconnect the oxygen sensor connector.