how to fix P0130 oxygen sensor issue on Toyota Highlander XU70 (2020-Present)?

Solution

1. Preparation

• Gather tools and replacement parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to prevent any electrical shorts.

2. Remove the Oxygen Sensor

• Locate the upstream oxygen sensor (usually found near the engine manifold).
• Use a socket wrench with an oxygen sensor socket to remove the old sensor by turning it counterclockwise.
• Carefully disconnect the electrical connector from the oxygen sensor.

3. Inspect and Clean

• Examine the oxygen sensor port for carbon buildup or debris; clean if necessary.
• Inspect the wiring harness and connector for any signs of wear or damage.

4. Install the New Oxygen Sensor

• Apply anti-seize compound to the threads of the new oxygen sensor (if not pre-applied).
• Install the new sensor by threading it into the exhaust manifold and tightening it clockwise to the manufacturer's specified torque (typically around 30 ft-lbs).
• Reconnect the electrical connector securely to the new sensor.

5. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature.
• Use the OBD-II scanner to clear the P0130 code and monitor for any reoccurrence.