Service bulletins for the 2015 Kia Optima
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.
268 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Fuel injection are shown. Show all
| PS315 | 2017-08-02. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS. PIT STOP: GDI INJECTOR SPRAY TIP DEPOSITS - A design feature of vehicles equipped with a Gasoline Direct Injection (GDI) system is the placement of each fuel injector directly into the engine cylinder head assembly. Therefore, it is completely normal for the combustion process to create deposits on the injector spray tip surfaces. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.