how to resolve the P0135 O2 sensor issue in my Honda Accord 10th Generation (2018-2022)

Learn how to diagnose and fix P0135 O2 sensor issue in Honda Accord 10th Generation. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

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

2. Remove the O2 Sensor

• Locate the upstream O2 sensor on the exhaust manifold.
• Use a socket wrench with the appropriate size O2 sensor socket to unscrew the O2 sensor from its mounting point.
• Carefully disconnect the sensor's electrical connector.

3. Inspect and Clean

• Inspect the O2 sensor connector for any corrosion or damage; clean if necessary using electrical contact cleaner.
• Check the wiring harness for frayed wires or shorts and repair as needed.

4. Install New O2 Sensor

• Apply a small amount of anti-seize compound to the threads of the new O2 sensor (if applicable) to ensure easy removal in the future.
• Install the new O2 sensor by threading it into the exhaust manifold and tightening it to the manufacturer's specified torque (usually around 30-40 ft-lbs).
• Reconnect the electrical connector securely.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0135 trouble code from the vehicle's memory.