how to fix P0130 code in a Toyota Highlander XU70 (2020-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.
• Raise the vehicle securely if working underneath.

2. Inspect and Repair Wiring

• Tools Required: Wire stripper/crimper, multimeter
• Inspect the wiring harness and connectors for the upstream oxygen sensor. Look for frayed wires or loose connections.
• If any damage is found, repair or replace the affected wiring and connectors.

3. Replace Oxygen Sensor

• Tools Required: Oxygen sensor socket, ratchet, torque wrench
• Locate the upstream oxygen sensor on the exhaust manifold.
• Using the oxygen sensor socket, carefully unscrew the old sensor.
• Clean the threads on the exhaust manifold.
• Install the new oxygen sensor, hand-tightening first, then use the torque wrench to tighten to the manufacturer's specification (typically around 30 ft-lbs).

4. Clear Codes and Reconnect Battery

• Reconnect the negative battery terminal after all repairs.
• Use the OBD-II scanner to clear the P0130 error code.

5. Test Drive

• Take the vehicle for a test drive to ensure the check engine light does not re-illuminate and verify performance.