how to fix a malfunctioning catalytic converter on my Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is on a level surface and the parking brake is engaged.
• Allow the engine to cool completely before starting work.

2. Lift the Vehicle

• Use a jack to lift the vehicle and secure it with jack stands.
• Ensure the vehicle is stable before working underneath.

3. Remove the Catalytic Converter

• Tools Required: Socket set, wrench, penetrating oil, and a torque wrench.
• Apply penetrating oil to the bolts connecting the catalytic converter to the exhaust system and let it sit for a few minutes.
• Remove the bolts securing the catalytic converter to the exhaust pipe and exhaust manifold using the socket set.
• Carefully detach the catalytic converter from the exhaust system, taking care not to damage surrounding components.

4. Inspect and Replace

• Inspect the old catalytic converter for physical damage or clogging.
• If the converter is damaged, replace it with a new, OEM-quality catalytic converter.
• Ensure the replacement part meets emissions standards for your vehicle.

5. Install the New Catalytic Converter

• Position the new catalytic converter in place, aligning it with the exhaust pipe and manifold.
• Hand-tighten the bolts initially, then use a torque wrench to tighten them to the manufacturer’s specified torque settings (usually around 30-40 ft-lbs, but verify with service manual).

6. Reconnect Sensors and Exhaust Components

• If the catalytic converter has attached sensors, reconnect them, ensuring they are properly seated.
• Reattach any heat shields or other components that were removed during installation.

7. Lower the Vehicle and Test

• Remove the jack stands and lower the vehicle.
• Start the engine and allow it to idle for a few minutes before taking it for a test drive to ensure proper operation.