how to fix the catalytic converter issue in Toyota Corolla E170 (2013-2019)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Park the vehicle on a level surface and engage the parking brake.
• Disconnect the battery to ensure safety during the repair.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Exhaust back pressure gauge
• Jack and jack stands

2. Remove the Old Catalytic Converter

1. Lift the Vehicle:

   • Use a jack to raise the vehicle and secure it with jack stands.

2. Locate the Catalytic Converter:

   • Identify the location of the catalytic converter in the exhaust system.

3. Unbolt the Catalytic Converter:

   • Use the socket set to remove the bolts securing the catalytic converter to the exhaust manifold and the exhaust pipe. Take care not to damage surrounding components.

4. Remove the Catalytic Converter:

   • Carefully pull the catalytic converter out of its mounting brackets and remove it from the vehicle.

3. Install the New Catalytic Converter

1. Position the New Catalytic Converter:

   • Align the new catalytic converter in place, ensuring it fits correctly into the exhaust system.

2. Secure the Catalytic Converter:

   • Hand-tighten the bolts to the exhaust manifold and the exhaust pipe. Follow with a torque wrench to tighten them to the manufacturer’s specified torque values (typically around 30-40 ft-lbs, but check the specific service manual).

3. Reconnect the Oxygen Sensors:

   • If applicable, reinstall the oxygen sensors and ensure they are securely connected.

4. Reconnect Battery and Test

1. Reconnect the Battery:

   • Reconnect the negative battery terminal and ensure it is tight.

2. Start the Vehicle:

   • Start the engine and check for any exhaust leaks around the new catalytic converter.

3. Scan for Error Codes:

   • Use the OBD-II scanner to clear any existing codes and verify that no new codes appear after starting the vehicle.