TWC Inspection
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
- Visually/physically inspect the three-way catalyst (TWC) converter for the following damage:
- Severe discoloration caused by excessive temperature
- Dents and holes
- Internal rattle caused by a damaged catalyst
- Also, ensure that the TWC is a proper original equipment manufacturer part.
- Was a problem found?
YES
- Replace TWC and go to "VERIFICATION OF VEHICLE REPAIR " procedure
NO
- Go to next step below