{"nhtsa_id":11020799,"type":"service_campaign","type_name":"Service campaign","date_added":"2025-07-22","date":"2025-07-16","document_id":"25-01-010H-1 DN","mfr_campaign":"9B4","replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Certain Elantra Hybrid (CN7 HEV), Sonata Hybrid (DN8 HEV), and Tucson Hybrid (NX4 HEV) vehicles may exhibit a warning light due to DTC Code P1BB20 (12V Lithium Battery Cell Voltage High). The California Air Resources Board has determined that these vehicles may be releasing air pollutants which exceed Federal and California standards.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020799-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020799-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11020799","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"ELANTRA HYBRID","year_from":2021,"year_to":2023,"match":"base","vehicle_ids":["2021_hyundai_elantra","2022_hyundai_elantra","2023_hyundai_elantra"]},{"make":"HYUNDAI","model":"SONATA HYBRID","year_from":2020,"year_to":2022,"match":"base","vehicle_ids":["2020_hyundai_sonata","2021_hyundai_sonata","2022_hyundai_sonata"]},{"make":"HYUNDAI","model":"TUCSON HYBRID","year_from":2022,"year_to":2024,"match":"base","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":[]}