{"nhtsa_id":11036202,"type":"service_campaign","type_name":"Service campaign","date_added":"2026-08-15","date":"2026-08-06","document_id":"26-01-039H TSB","mfr_campaign":"9D3","replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE","mfr_system":null,"summary":"Certain Elantra (ADA) vehicles may have been incorrectly updated with Cylinder Noise Detection System (CNDS) software that can set DTC P132700; this software was intended only for Korean-built Elantra (AD) vehicles. This bulletin provides instructions to perform a software update for the Engine Control Module (ECM) to revert to the original ROM ID, apply the emissions label under the hood, and provide the vehicle owner with Proof of Correction.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036202-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036202-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11036202","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":["P1327"],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"ELANTRA","year_from":2019,"year_to":2020,"match":"exact","vehicle_ids":["2019_hyundai_elantra","2020_hyundai_elantra"]}],"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":[]}