my Toyota Highlander Third Generation (2014-2019) has a check engine light with code P0130

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before proceeding.

2. Remove the Oxygen Sensor

• Locate the upstream oxygen sensor (typically found on the exhaust manifold).
• Using a socket wrench with an oxygen sensor socket, gently unscrew the sensor from its position.
• Carefully disconnect the electrical connector from the oxygen sensor.

3. Inspect and Clean

• Inspect the sensor and connector for any signs of damage or corrosion.
• If necessary, clean the area around the sensor mounting location on the exhaust to ensure proper sealing for the new sensor.

4. Install New Oxygen Sensor

• Apply anti-seize compound to the threads of the new oxygen sensor to prevent seizing.
• Screw the new oxygen sensor into the exhaust manifold by hand to avoid cross-threading, then tighten to the manufacturer's specified torque (typically around 30 ft-lbs).
• Reconnect the electrical connector to the new oxygen sensor.

5. Final Steps

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature, checking for leaks or unusual sounds.