how to check if the catalytic converter is clogged on Tesla Outback 6th Generation (2020-2024)

Solution

1. Preparation

• Gather Tools and Parts: OBD-II scanner, pressure gauge, infrared thermometer, safety glasses, gloves.
• Safety Precautions: Allow the vehicle to cool down before starting any work. Work in a well-ventilated area.

2. Scan for Error Codes

• Connect the OBD-II scanner to the vehicle's diagnostic port.
• Turn the ignition to the "On" position without starting the engine.
• Read and note any trouble codes related to the catalytic converter or emissions.

3. Perform a Backpressure Test

• Locate the upstream O2 sensor and carefully remove it.
• Insert the pressure gauge into the O2 sensor port.
• Start the engine and allow it to idle.
• Note the backpressure reading; it should be below 1.5 psi at idle and below 3 psi at higher RPMs.

4. Temperature Check

• Use an infrared thermometer to measure the temperature at the inlet side of the catalytic converter.
• Measure the temperature at the outlet side.
• The outlet temperature should be significantly higher than the inlet temperature (at least 100°F difference) if the catalytic converter is functioning properly.

5. Assess and Replace if Necessary

• If any of the diagnostic tests indicate a clog (high backpressure, small temperature difference), the catalytic converter may need replacement.
• Follow the vehicle service manual for the replacement procedure if necessary.