how to fix P0133 code in Honda Accord 8th Generation (2008-2012)?

Learn how to diagnose and fix P0133 code for slow response from the oxygen sensor in Honda Accord 2008-2012. Step-by-step guide with tools and procedures.

Solution

1. Preparation

• Gather tools and parts required.
• Disconnect the negative terminal of the battery to ensure safety while working on electrical components.

2. Remove the Oxygen Sensor

• Tools Required: O2 sensor socket, ratchet, and extension.
• Locate the upstream oxygen sensor (typically before the catalytic converter).
• Use the O2 sensor socket to unscrew the sensor from the exhaust manifold.
• Carefully disconnect the wiring harness from the oxygen sensor.

3. Inspect and Clean

• Inspect the sensor port for carbon buildup or debris. Clean the area around the sensor to prevent contaminants from entering the exhaust system.

4. Install New Oxygen Sensor

• Tools Required: O2 sensor socket.
• Apply anti-seize compound to the threads of the new oxygen sensor (if not pre-applied).
• Install the new oxygen sensor into the exhaust manifold and torque to the manufacturer's specification (typically around 30 ft-lbs).
• Reconnect the wiring harness to the new oxygen sensor.

5. Reconnect Battery and Test

• Reconnect the negative terminal of the battery.
• Start the engine and allow it to reach operating temperature.
• Monitor the voltage output of the new oxygen sensor to ensure it reacts appropriately to changing conditions (should oscillate between 0.1V and 0.9V).