Oxygen Sensor (O2S) 2 after Three Way Catalytic Converter (TWC) (G131) Bank 2 Left

Oxygen Sensor (O2S) 2 after Three Way Catalytic Converter (TWC) (G131) Bank 2 Left

Special tools, testers and auxiliary items required

• Ring Spanner 7-Piece Set (3337)

Removing

- Remove the rear engine cover - top arrows -.






- Remove bolt - arrow -.






- Disconnect the electrical connector to the engine coolant level warning switch (F66) on the bottom of the coolant reservoir and lay the reservoir aside with the coolant hoses - 1 - and - 2 - attached.

- Disconnect the electrical connector - 2 - for the oxygen sensor (O2S) 2 after three way catalytic converter (TWC) and free up the electrical wire.






• Ignore - 1 -.

- Remove the oxygen sensor - 2 - with the oxygen sensor probe wrench (3337/7).






• The installation location is shown with the engine removed.

Installing

• Tightening specifications, refer to => [ Component Locations Overview ] Component Locations Overview.

Installation is performed in reverse order of removal, noting the following:

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

• For a used oxygen sensor, only coat threads with hot bolt paste. This paste must not come into contact with oxygen sensor slots.

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