{"nhtsa_id":10217678,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-08-18","date":"2022-08-02","document_id":"SC205_TSB","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA 2.0L T-GDI ULEV LOGIC IMPROVEMENT FOR EMISSIONS (SC205) - This bulletin provides the procedure to update the emissions-related logic of the Engine Control Unit (ECU) on some 2016-2020MY Optima (JFa) ULEV vehicles, equipped with 2.0L T-GDI Theta engines, produced from April 21, 2015 through May 22, 2020, in order to improve fuel quantity learning to decrease the deterioration of the rear Oxygen Sensor.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10217678-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10217678-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10217678","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA","year_from":2016,"year_to":2020,"match":"exact","vehicle_ids":["2016_kia_optima","2017_kia_optima","2018_kia_optima","2019_kia_optima","2020_kia_optima"]}],"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":[]}