how to fix the P0133 code on Honda Accord 8th Generation (2008-2012)

Learn how to diagnose and fix P0133 O2 sensor slow response in Honda Accord 2008-2012. Step-by-step guide with diagnostic procedures and repair instructions.

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, torque wrench, and safety goggles.
• Ensure the vehicle is parked on a level surface, and the engine is cool.

2. Disconnect Battery

• Disconnect the negative terminal of the battery to prevent electrical shorts.
• Wait for a few minutes to ensure that the vehicle's electrical system is fully discharged.

3. Remove O2 Sensor

• Locate the upstream O2 sensor (Bank 1 Sensor 1) near the exhaust manifold.
• Use a socket wrench to carefully unscrew the O2 sensor from its mounting location.
• Inspect the sensor for any physical damage or contamination.

4. Install New O2 Sensor

• Apply anti-seize compound to the threads of the new O2 sensor to prevent seizing.
• Install the new O2 sensor by threading it into place and tightening it to the manufacturer’s specified torque (typically around 30-35 ft-lbs).
• Reconnect the electrical connector to the new O2 sensor.

5. Reconnect Battery

• Reconnect the negative terminal of the battery.
• Ensure the connections are tight and secure.

6. Clear Codes and Test

• Use the OBD-II scanner to clear the P0133 code from the vehicle's computer.
• Start the engine and allow it to reach operating temperature.
• Take the vehicle for a short test drive to ensure the issue is resolved.