how to fix the P0131 code in my Honda CR-V Fifth Generation (2017-2022)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the battery negative terminal to ensure safety.

2. Remove the Oxygen Sensor

• Locate the upstream oxygen sensor (usually near the exhaust manifold).
• Using an oxygen sensor socket, carefully unscrew the sensor from the exhaust pipe.
• Disconnect the electrical connector by pressing the release tab and pulling it apart.

3. Inspect and Install New Sensor

• Inspect the old oxygen sensor for signs of damage or carbon buildup.
• If replacing, install the new oxygen sensor by:
  • Applying anti-seize compound (if not pre-applied) to the threads.
  • Carefully threading the new sensor into the exhaust pipe and tightening it to the manufacturer's torque specification (usually around 30-35 lb-ft).
• Reconnect the electrical connector until it clicks securely.

4. Clear Error Codes

• Reconnect the battery terminal.
• Use the OBD-II scanner to clear the P0131 code from the vehicle's computer.

5. Test Drive

• Start the engine and allow it to reach operating temperature.
• Take the vehicle for a test drive to ensure the check engine light does not reappear and the vehicle operates smoothly.