Heated Oxygen Sensor (HO2S) Repair Procedures

Inspection

1. 1
   Turn the ignition off.
2. 2
   Disconnect the HO2S connector.
3. 3
   Measure the resistance between terminals 2 and 5 [B1/S1] of the HO2S.
4. 4
   Measure the resistance between terminals 3 and 4 [B1/S2] of the HO2S.
5. 5
   Make sure the resistance is within specification.

   Specification: Refer to "Specifications"

Removal

[Bank 1/Sensor 1]

1. 1
   Turn the ignition switch OFF and disconnect the negative (-) battery cable.
2. 2
   Disconnect the connector (A) and remove the sensor (B).

   Note that the SST (part number: 09392-1Y100) is useful when removing the heated oxygen sensor.

   

   

   

[Bank 1/Sensor 2]

1. 1
   Turn the ignition switch OFF and disconnect the negative (-) battery cable.
2. 2
   Disconnect the connector (A) and remove the sensor (B).

   

   

Installation

Install the component with the specified torque. Note that internal damage may occur if the component is dropped. If the component has been dropped, inspect it before installation.

DO NOT use cleaner, spray, or lubricant on the sensing element and sensor connector, as oil components in them may cause sensor malfunction. The sensor and its wiring may be damaged if they contact the exhaust system (exhaust manifold, catalytic converter, etc.).

1. Install in the reverse order of removal. Heated Oxygen Sensor Installation: 39.2 ~ 49 N·m