Kia Optima 2016–2022 — technical service bulletin
Bulletin SC340_QA · NHTSA communication 11024468 · issued Oct 23, 2025
Technical service bulletin
communication type
Electrical System
component
2016–2022
model years
16
vehicle entries
Official summary
VOLUNTARY EMISSIONS SERVICE CAMPAIGN: QUESTION AND ANSWER (SC340) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Voluntary Emissions Service Campaign SC340.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.