Oxygen Sensors Behind Catalytic Converter

Removing And Installing Oxygen Sensor Behind Catalytic Converter

Tools










Illustration shows oxygen sensors on the right side







- -1- Oxygen sensor in front of catalytic converter on the right side
- -2- Oxygen sensor behind catalytic converter on the right side

Oxygen sensor plug







- -1- Plug for sensor in front of catalytic converter with plastic clip (rectangular)
- -2- Plug for sensor behind catalytic converter (oval)

NOTE: Observe precautionary measures when using oxygen sensors.

Removing Oxygen Sensors Behind The Catalytic Converter

Oxygen Sensor, Left Side:







1. Remove air cleaner housing.
2. Separate the oval plug connection for the oxygen sensor behind the catalytic converter in the left engine compartment -2-.
3. Unclip the oxygen sensor wire behind the catalytic converter from the wire retainer and the sheetmetal clips.

NOTE: Always expose oxygen sensor wire so that the wire can turn when unscrewing the sensor.

4. Undo and unscrew oxygen sensor with a spanner or an open ring wrench (a/f 22).

Oxygen Sensor, Right Side:







1. Remove air cleaner housing.
2. Separate the rectangular plug connection for the oxygen sensor behind the catalytic converter -2-.
3. Unclip the oxygen sensor wire behind the catalytic converter from the wire retainer and the sheetmetal clips.

NOTE: Always expose oxygen sensor wire so that the wire can turn when unscrewing the sensor.

4. Undo and unscrew oxygen sensor with a spanner or an open ring wrench (a/f 22).

Installing Oxygen Sensors Behind The Catalytic Converter
- Install the oxygen sensors in reverse order.

NOTE: Always expose oxygen sensor wire so that the wire can turn when screwing in the sensor.

1. Position the oxygen sensor by hand and screw in as far as possible.
2. Tighten oxygen sensor with conventional open ring wrench No. Hazet 4681-1 and torque wrench.

Tightening torque: 55 ± 5 Nm (41 ± 4.0 ftlb.)

3. Lay oxygen sensor wire and fix in the sheetmetal clips and wire retainers on the left and right.
4. Close the oval plug connection.
5. Install the air cleaner housing again.