how to fix P0130 oxygen sensor code in Toyota Highlander Fourth Generation (2020-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working with electrical components.

2. Remove the Old Oxygen Sensor

• Locate the upstream oxygen sensor on the exhaust manifold.
• Use an oxygen sensor socket or wrench to carefully unscrew the sensor from its mounting.
• Disconnect the electrical connector from the oxygen sensor.

3. Install the New Oxygen Sensor

• Apply a small amount of anti-seize compound to the threads of the new oxygen sensor (if not pre-coated).
• Carefully screw the new oxygen sensor into the exhaust manifold by hand to avoid cross-threading.
• Tighten the sensor to the manufacturer's specified torque (typically around 30 lb-ft, but refer to the service manual for the exact value).
• Reconnect the electrical connector to the new oxygen sensor.

4. Reconnect the Battery

• Reattach the negative battery terminal.
• Ensure all tools and equipment are removed from the engine bay.

5. Clear the Codes and Test

• Use the OBD-II scanner to clear the P0130 code from the vehicle's computer.
• Start the engine and allow it to reach operating temperature.
• Monitor the engine for any abnormal symptoms.