{"vehicle":{"id":"2019_hyundai_ioniq","year":2019,"make":"Hyundai","model":"Ioniq"},"code":"P0128","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":2,"bulletins":[{"nhtsa_id":10185450,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-01-09","date":"2020-12-16","document_id":"20-FL-012H","mfr_campaign":null,"component":"EQUIPMENT; ENGINE AND ENGINE COOLING","summary":"This bulletin provides information related to the Engine Control Module (ECM) software logic update for DTC P0128 “Coolant thermostat - Coolant temp Below thermostat regulating Temperature”. There is no drivability issue with this DTC.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10185450-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10185450-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10185450"},{"nhtsa_id":10185431,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-01-09","date":"2020-12-16","document_id":"20-01-049H","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"This bulletin provides information related to the Engine Control Module (ECM) software update for OBD communication test logic, and for DTC P0128 “Coolant thermostat - Coolant temp Below thermostat regulating Temperature”. There are no drivability related conditions.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10185431-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10185431-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10185431"}],"url":"https://open.wenmarpro.com/makes/hyundai/ioniq/2019/bulletins?code=P0128"},"related":{"components":[],"bulletins":[],"recalls":{"may_apply":true,"recalls":[],"lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null}}},"url":"https://open.wenmarpro.com/makes/hyundai/ioniq/2019/codes/P0128","note":"The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.","attribution":["Contains information licensed under the Open Government Licence – Canada."]}