Removing and Installing Oxygen Sensors In Front of Catalytic Converter

Removing And Installing Oxygen Sensors In Front Of Catalytic Converter

CAUTION: Always expose oxygen sensor wire so that the wire can turn when unscrewing or screwing in the sensor.

NOTE: Observe precautionary measures when using oxygen sensors.

Tools







Removing Oxygen Sensors In Front Of Catalytic Converter - RoW
1. Remove respective rear wheel. To do this, use the socket wrench insert No. P 300 to avoid damaging the wheel.







2. Remove oxygen sensor cable and oxygen sensor plug from the holder on the axle support -arrow-.







3. Unlock and disconnect oxygen sensor plug by pulling the plug lock out sideways. Use a small screwdriver to open the plug lock at the side -see Figure-.
4. Undo oxygen sensor using an open-ended wrench (wrench size 22) and screw it out by hand.

Removing Oxygen Sensors In Front Of Catalytic Converter - USA

Oxygen sensor cylinder bank 1 - 3:
- -1- Sensor behind catalytic converter: black cable conduit
- -2- Sensor in front of catalytic converter: blue cable conduit







1. Pull off oxygen sensor cable plug in front of catalytic converter (blue cable conduit) and expose oxygen sensor cable -1-.







2. Undo oxygen sensor -1- with an open-ended wrench or open ring wrench (wrench size 22) and screw it out by hand.

Oxygen sensor cylinder bank 4 - 6:
- -1- Sensor behind catalytic converter: black cable conduit
- -2- Sensor in front of catalytic converter: blue cable conduit

3. Pull off oxygen sensor cable plug in front of catalytic converter (blue cable conduit) and expose oxygen sensor cable 1.
4. Undo oxygen sensor using an open-ended wrench (wrench size 22) and screw it out by hand.

Installing Oxygen Sensors In Front Of Catalytic Converter - RoW
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 4681-3 and torque wrench.

Tightening torque 55 (41) ± 5 (3.5) Nm (ftlb.)

3. Connect the oxygen sensor connecting plugs and secure by inserting the plug lock.







4. Fit oxygen sensor cable and oxygen sensor plug on the holder on the axle support.
5. Mount respective rear wheel. To do this, use the socket wrench insert No. P 300 to avoid damaging the wheel.

Tightening torque 130 Nm (96 ftlb.)

Installing Oxygen Sensors In Front Of Catalytic Converter - USA
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 4681-3 and torque wrench.

Tightening torque 55 (41) ± 5 (3.5) Nm (ftlb.)

3. Route the blue oxygen sensor cable and secure it in the sheet-metal brackets, wire retainers, or the cable guide.
4. Connect plug connection and insert in the holder.

Tightening Torques