how to fix the P0133 code in my Volvo XC60 Second Generation (2018-2024)?

Learn how to diagnose and fix P0133 oxygen sensor issues in a 2018-2024 Volvo XC60. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, socket set, torque wrench, oxygen sensor socket, safety goggles, gloves.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before starting work.

2. Remove the Old Oxygen Sensor

• Locate the upstream oxygen sensor (typically found on the exhaust manifold or just before the catalytic converter).
• Use an oxygen sensor socket to carefully unscrew the old sensor from the exhaust system.
• Disconnect the electrical connector from the sensor.

3. Inspect and Clean

• Inspect the wiring harness and connector for any signs of damage or corrosion.
• Clean the threads on the exhaust pipe where the sensor attaches to ensure a good seal for the new sensor.

4. Install New Oxygen Sensor

• Apply anti-seize compound to the threads of the new oxygen sensor to prevent it from seizing.
• Screw in the new oxygen sensor by hand to avoid cross-threading, then tighten it with the oxygen sensor socket to the manufacturer’s specified torque (typically around 30-40 Nm).
• Reconnect the electrical connector to the new sensor.

5. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and let it reach operating temperature.
• Use the OBD-II scanner to clear the P0133 code and check for any reoccurrence after a test drive.