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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and secure it with wheel chocks.
• Disconnect the battery to ensure safety.

2. Remove the Catalytic Converter

• Tools Required: Socket set, ratchet, torque wrench, penetrating oil.
• Spray penetrating oil on the bolts connecting the catalytic converter to the exhaust system to ease removal.
• Use a socket wrench to remove the bolts or clamps holding the catalytic converter in place.
• Carefully lower the catalytic converter from the vehicle.

3. Inspect and Clean

• Visually inspect the catalytic converter for signs of physical damage or clogging.
• If applicable, clean the exhaust ports and surrounding areas of carbon buildup using a soft brush and cleaning solvent.

4. Replace with New Catalytic Converter

• Parts Required: New catalytic converter specific to Toyota Camry (OEM recommended).
• Position the new catalytic converter in place and hand-tighten the bolts or clamps.
• Torque the bolts to the manufacturer’s specifications (typically around 40-50 ft-lbs, but consult repair manual for exact value).

5. Reconnect Battery and Test

• Reconnect the battery and start the engine.
• Monitor for any exhaust leaks and listen for unusual noises.
• Allow the engine to reach operating temperature and check the performance.