P0456 on the 2017 Kia Optima
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.
Nobody has written a description of this code yet.
| PS567_R2 | 2020-12-01. Service bulletin. PITSTOP: DTC P0456/P0442 WITH FUEL PUMP SEAL DAMAGE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This Pitstop provides information regarding DTC P0456/P0442 (Evaporative Emissions System (Very) Small Leak Detected) or fuel smell on some 2017-2018MY Cadenza (YG) vehicles and some Optima Hybrid (JF HEV) vehicles, produced before August 16, 2017. |
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| TSB_FUE046 | 2020-07-06. Service bulletin. 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. |
| PS567_R1 | 2018-11-13. Service bulletin. PITSTOP: DTC P0456/P0442 WITH FUEL PUMP SEAL DAMAGE - This Pitstop provides information regarding DTC P0456/P0442 (Evaporative Emissions System ? (Very) Small Leak Detected) or fuel smell on some 2017MY Cadenza (YG) vehicles, produced before August 7, 2017 and some Optima Hybrid (JF HEV) vehicles, produced before August 16, 2017. When addressing the concern with DTC P0456/P0442 and the vapor lines, fuel cap, and all other corresponding circuits are found to be within specifications, it may be necessary to inspect the fuel pump seal for damage. If this seal is found to be torn or split, replace the fuel pump seal by referring to the ?Engine Control / Fuel System ? Fuel Delivery System ? Low Pressure Fuel Pump ? Repair procedures? chapter in the applicable Shop Manual on KGIS. |
3 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.