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Home >> Genesis >> 2021 >> G90 5.0 Ultimate, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 33 (Engine Control System Diagnosis - 3.3L (7 Of 9)) >> DTC P2099-00: Post Catalyst Fuel Trim System Too Rich (Bank 2) >> Component Inspection >> TWC Inspection

TWC Inspection

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  1. 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.
  2. Also, ensure that the TWC is a proper original equipment manufacturer part.
  3. Was a problem found?

    YES 

    NO 

    • Go to next step as below.