how to identify a bad catalytic converter in Skoda Octavia NFL (2020-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery before working on the exhaust system.

2. Remove the Catalytic Converter

• Tools Required: Socket set, wrench, exhaust pipe cutter, jack stands, safety goggles, gloves.
• Sub-steps:
  1. Raise the vehicle using a jack and secure it with jack stands.
  2. Locate the catalytic converter along the exhaust system.
  3. Remove any heat shields covering the catalytic converter, if applicable.
  4. Disconnect the exhaust pipes connected to the catalytic converter using a socket wrench.
  5. Cut or remove any mounting brackets securing the catalytic converter.
  6. Carefully remove the catalytic converter from its position.

3. Inspect and Replace

• Tools Required: Torque wrench, gasket scraper, new gaskets, new catalytic converter.
• Sub-steps:
  1. Inspect the old catalytic converter for physical damage (e.g., cracks, excessive buildup).
  2. Clean any residue from the exhaust pipe flanges using a gasket scraper.
  3. Install the new catalytic converter into position, ensuring it aligns with existing exhaust components.
  4. Use new gaskets on both sides of the catalytic converter where it connects to the exhaust pipes.
  5. Torque the bolts to the manufacturer’s specifications to secure the connections.

4. Reassemble and Check

• Reinstall any heat shields and components removed during the disassembly.
• Reconnect the battery and clear any error codes with the OBD-II scanner.