{"nhtsa_id":11036622,"type":"service_campaign","type_name":"Service campaign","date_added":"2026-09-02","date":"2026-08-21","document_id":"26-01-027H TSB","mfr_campaign":"9D1","replaces":null,"component":"ENGINE","mfr_system":null,"summary":"Certain Kona (OS) vehicles equipped with the 1.6T-GDI engine may exhibit elevated engine-out emissions that may not meet engine-out NOx (Nitrogen Oxides) and Particulate Matter (PM) emission standards. This bulletin provides the instructions to update the emission logic within the Engine Control Module (ECM) to improve engine-out NOx and PM emissions within permissible specifications.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036622-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036622-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11036622","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"KONA","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_hyundai_kona"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}