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

Solution

1. Preparation

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

2. Remove Oxygen Sensor

• Locate the upstream oxygen sensor (usually found before the catalytic converter).
• Use an oxygen sensor socket to carefully unscrew the sensor from the exhaust manifold.
• Disconnect the wiring harness from the oxygen sensor.

3. Inspect and Clean

• Inspect the threads of the oxygen sensor hole for carbon buildup or damage.
• Clean the area around the sensor hole to prevent debris from entering the exhaust.

4. Install New Oxygen Sensor

• Apply anti-seize compound to the threads of the new oxygen sensor (if not pre-applied).
• Screw in the new oxygen sensor by hand to avoid cross-threading, then tighten it with an oxygen sensor socket to the manufacturer’s torque specification (typically around 30 lb-ft).
• Reconnect the wiring harness to the new sensor, ensuring a secure connection.

5. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature while monitoring the oxygen sensor’s operation with a scan tool if available.