how to fix P0130 oxygen sensor circuit malfunction in Toyota Highlander Fourth Generation (2020-pres...

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, basic socket set, torque wrench, safety glasses, gloves.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Replace the Oxygen Sensor

1. Locate the Oxygen Sensor:

   • Find the location of the upstream oxygen sensor (typically located in the exhaust manifold or front pipe).

2. Remove the Old Sensor:

   • Carefully unplug the electrical connector from the oxygen sensor.
   • Use a socket wrench to unscrew and remove the sensor from its mounting location.

3. Install the New Sensor:

   • Apply anti-seize compound to the threads of the new oxygen sensor (avoid getting it on the sensor tip).
   • Screw the new sensor into the exhaust system and tighten it to the manufacturer’s specifications (typically 30-40 ft-lbs).

4. Reconnect the Electrical Connector:

   • Plug the oxygen sensor connector back into place, ensuring a secure fit.

3. Reset the ECU

1. Reconnect the negative battery terminal.
2. Use the OBD-II scanner to clear the error codes from the ECU.

4. Test the System

1. Start the engine and let it idle for a few minutes.
2. Perform a test drive to ensure the check engine light does not reappear.