how to check the catalytic converter on my Honda CR-V Sixth Generation (2023-present)

Solution

1. Preparation

• Gather necessary tools and equipment.
• Ensure the vehicle is parked on a level surface, the engine is cool, and the keys are removed from the ignition.

2. Gather Tools and Equipment

• Tools Required:
  • OBD-II scanner
  • Temperature gun
  • Exhaust back pressure gauge
  • Wrench set
  • Safety goggles and gloves

3. Visual Inspection

• Inspect the catalytic converter for any signs of physical damage, such as dents or rust.
• Check the mounting brackets and heat shields for secure attachment.

4. Temperature Testing

• Start the engine and let it warm up to operating temperature.
• Use a temperature gun to measure the exhaust temperature at the inlet (before the catalytic converter) and outlet (after the catalytic converter).
• The temperature at the outlet should be lower than at the inlet by at least 100°F (38°C). If not, the catalytic converter may be failing.

5. Back Pressure Test

• Disconnect the exhaust pipe just downstream of the catalytic converter.
• Install the exhaust back pressure gauge into the exhaust system.
• Start the engine and observe the back pressure reading. A reading above 2.5 psi at idle may indicate a clogged catalytic converter.
• Reconnect all components after testing.