how to fix P0420 code in my Honda CR-V Sixth Generation (2023-present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to avoid electrical shorts.

2. Replace Faulty Oxygen Sensors

1. Locate the upstream and downstream oxygen sensors.
2. Use a socket wrench to remove the faulty oxygen sensor(s).
3. Install the new oxygen sensor(s) and torque to manufacturer specifications (usually around 30 ft-lbs).
4. Reconnect the electrical connectors securely.

3. Inspect and Replace Catalytic Converter (if necessary)

1. Remove any heat shields covering the catalytic converter using a socket set.
2. Use a cutting tool (if necessary) to remove the old catalytic converter from the exhaust system.
3. Install the new catalytic converter, ensuring proper alignment and secure it with bolts to the specified torque value.
4. Reattach any heat shields removed earlier.

4. Clear Codes and Reconnect Battery

• Reconnect the battery terminals.
• Use the OBD-II scanner to clear the P0420 code.