Catalytic Converter: Testing and Inspection

Three Way Catalytic Converter (TWC), Checking

Function test
- Connect the scan tool.
- Start the engine and let it run at idle.
- Select "Diagnostic mode 6: Check test results of components that are not continuously monitored".
- Select "Catalytic converter monitoring".
- Select following Test-ID.
- Check the specified values at idle.







- End diagnosis and switch the ignition off.

If the specified values are exceeded:
- Replace the catalytic converter with front exhaust pipe.

Final procedure
After the repair work, the following work steps must be performed in the following sequence:
1. Check the DTC memory.
2. If necessary, erase the DTC memory.
3. If the DTC memory was erased, generate readiness code.

- End of diagnosis.