{"nhtsa_id":11018891,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-06-03","date":"2025-05-30","document_id":"25-AT-001H TSB","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"Certain Santa Fe (TMA) and Sonata (DN8/DN8A) vehicles equipped with 8-speed dual clutch transmissions (8DCT) may exhibit one of the DTCs listed below, related to the high pressure electric oil pump (HP EOP). Follow the procedures in this TSB to update the Transmission Control Unit (TCU) to the latest sensorless logic on affected vehicles, and then perform air bleeding and transmission learning.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018891-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018891-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11018891","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"SANTA FE","year_from":2021,"year_to":2023,"match":"exact","vehicle_ids":["2021_hyundai_santa-fe","2022_hyundai_santa-fe","2023_hyundai_santa-fe"]},{"make":"HYUNDAI","model":"SONATA","year_from":2021,"year_to":2022,"match":"exact","vehicle_ids":["2021_hyundai_sonata","2022_hyundai_sonata"]}],"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":[]}