Service bulletins for the 2018 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.
170 on file from NHTSA, as of 2026-10-19.
About P0456 on the 2018 Kia Optima: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P0456 are shown. Show all
| TSB_FUE046 | 2020-07-06. Service bulletin. FUEL SYSTEM, GASOLINE. TECHNICAL SERVICE BULLETIN: COMBINATION TSB/SERVICE ACTION: AIR FILTER AND NVLD REPLACEMENT (SA421) - This bulletin provides the procedure to perform an evaporative leak test and replace the fuel tank air filter, and, if necessary, the Natural Vacuum Leak Detector (NVLD) on some Optima (JF HEV) vehicles, produced from June 27, 2016 through January 7, 2019, which may experience an evaporative leak concern with DTC P0456. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.