how to fix the catalytic converter issue on my Volvo XC90 Second Generation (2015-2024)?

Solution

1. Preparation

• Gather tools and ensure the vehicle is parked on a level surface.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Tools Required: OBD-II scanner, socket set, jack and jack stands, torque wrench, exhaust pipe cutter (if necessary).

2. Remove the Catalytic Converter

• Raise the vehicle using a jack and secure it with jack stands.
• Locate the catalytic converter in the exhaust system.
• Remove any heat shields or brackets securing the catalytic converter using a socket set.
• Disconnect the exhaust pipes connected to the catalytic converter, using an exhaust pipe cutter if necessary.
• Carefully remove the catalytic converter from its mounting location.

3. Inspect and Clean

• Inspect the catalytic converter for signs of damage, clogging, or contamination.
• If cleaning is feasible, use a specialized catalytic converter cleaner and follow the product instructions. Note that heavily damaged converters should be replaced.

4. Install New Catalytic Converter (if necessary)

• Place the new catalytic converter in the mounting location.
• Reconnect the exhaust pipes and secure them using the original or new hardware.
• Ensure all connections are tight and leak-free, using a torque wrench to meet manufacturer specifications.

5. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and let it idle to check for any exhaust leaks.
• Clear any diagnostic trouble codes using the OBD-II scanner.