Left Front Heated Oxygen Sensor before Catalytic Converter

Left Front Heated Oxygen Sensor before Catalytic Converter

Special tools, testers and auxiliary items required

• Ring spanner 7-piece set (3337)

Removing

• All cable ties which are opened or cut open when removing, must be replaced in the same position when installing.

- Activate vehicle lifting mode.

- Remove left front wheel.

• Secure the brake disc with wheel bolts.

- Remove front part of left front wheelhouse liner.

- Pull off both air duct hoses - arrows - at bottom of left air filter housing by pressing release buttons.





- Separate electrical connector - 3 - for Mass Air Flow (MAF) sensor 2 (-G246-).





- Disconnect hose - 2 - from air duct hose.

- Disconnect air duct hose - 1 - at intake manifold.

- Remove bolts - arrows -.

- Remove upper part of left air filter housing.

- Remove air duct - 1 -.





- Remove bolts - arrows -.

- Remove lower part of left air filter housing.

- Separate electrical connector - 1 - for Heated Oxygen Sensor (HO2S) 3 (-G285-).





• Disregard the other items in the illustration.

- Expose electrical wiring to oxygen sensor.

- Remove Heated Oxygen Sensor (HO2S) 3 (-G285-) - arrow 1 - using ring spanner set (3337).





Installing

Perform installation in the reverse order of removal, noting the following:

• New oxygen sensors are coated with assembly paste; the paste must not get into slots on the oxygen sensor body.

• When re-installing a used oxygen sensor, coat the threads with hot bolt paste. This paste must not come into contact with the slots on the oxygen sensor body.

• During installation, all cable ties must be re-installed at the same location.

• Wires of oxygen sensors must always be secured in the same position when installing so that contact with the exhaust pipe is avoided.

- Install front part of left front wheelhouse liner.

- Deactivate vehicle lifting mode.

Tightening Specifications