how to fix P0133 oxygen sensor code in Honda Accord 10th Generation (2018-2022)

Learn how to diagnose and fix P0133 oxygen sensor code in Honda Accord 10th Generation (2018-2022). Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool down before starting work.

2. Remove the Upstream Oxygen Sensor

• Locate the upstream oxygen sensor, which is typically found in the exhaust manifold or first section of the exhaust pipe.
• Use an oxygen sensor socket or wrench to carefully unscrew the sensor from its mount.
• Disconnect the electrical connector by pressing the tab and pulling it apart.

3. Inspect and Clean

• Inspect the sensor threads and the area for any debris or carbon buildup.
• If necessary, clean the threads with a wire brush to ensure a proper seal with the new sensor.

4. Install the New Oxygen Sensor

• Apply anti-seize compound on the threads of the new oxygen sensor (if recommended by the manufacturer).
• Screw the new sensor into place by hand, then tighten it securely with a torque wrench to the manufacturer’s specified torque (usually around 30-50 ft-lbs).
• Reconnect the electrical connector ensuring it clicks into place.

5. Reconnect Battery and Clear Codes

• Reconnect the battery terminal.
• Use the OBD-II scanner to clear the P0133 code from the vehicle’s computer.

6. Test Drive

• Start the engine and allow it to reach operating temperature.
• Take the vehicle for a test drive to ensure that the check engine light does not reappear and monitor fuel economy and performance.