Warning. Oxygen concentration sensors are installed in the exhaust system, which heats up to high temperatures during engine operation. To avoid burns, sensors should be checked and removed after the system components have cooled to a safe temperature.
1. We prepare the car for maintenance and repair.
2. Disconnect the wire terminal from the negative terminal of the battery.
3. In the engine compartment, press the lock...
...and disconnect the wiring harness connector from the sensor terminals, remove the sensor connector from the holder.
4. Inspect the connector and make sure there is no corrosion, oxidation or damage. If necessary, treat it with a special agent to clean and protect electrical contacts.
5. Disconnect the sensor wiring harness from the holder.
6. Apply penetrating lubricant to the sensor and its mounting location and use a special 22 mm wrench to unscrew the sensor from the hole in the exhaust manifold.
7. Install the new sensor in reverse order. Before installation, lubricate the sensor threads with copper-containing grease, making sure that the grease does not get on the sensitive element of the sensor. Tighten the sensor to a torque of 42 Nm.