{"nhtsa_id":11028968,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-02-24","date":"2026-02-21","document_id":"26-AT-002H","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"Some Santa Fe (TMA) and Tucson (NX4A) vehicles equipped with a 2.5L GDI engine and 8 speed automatic transmission may have DTC U028700 (Lost Communication With Trans Fluid Pump Module) set by the transmission Electric Oil Pump (EOP). This DTC can cause the Idle Stop & Go (ISG) system to become inoperative. Follow the procedure in this bulletin to replace the Electric Oil Pump on affected vehicles.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028968-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028968-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11028968","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["U0287"],"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":"TUCSON","year_from":2022,"year_to":2024,"match":"exact","vehicle_ids":["2022_hyundai_tucson","2023_hyundai_tucson","2024_hyundai_tucson"]}],"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":[]}