P0456 on the 2012 Hyundai Sonata
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.
| 21-FL-002H | 2021-07-09. Service bulletin. Certain 2011 2015 Sonata Hybrid vehicles (YF HEV) may experience a check engine light illumination with an Evaporative System (EVAP) leakage related DTC P0442 Small Leak, P0455 Large Leak, or P0456 Very Small Leak stored. Salt particulate deposits can form inside the Natural Vacuum Leak Detection (NVLD) sensor, which may cause intermittent operation, prompting the check engine light illumination and DTC P0442, P0455, or P0456. |
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| 21-01-035H | 2021-07-09. Service bulletin. Certain 2011 2015 Sonata Hybrid vehicles (YF HEV) may experience check engine light illumination with Evaporative System (EVAP) leakage related DTC P0442 Small Leak, P0455 Large Leak or P0456 Very Small Leak stored. These conditions primarily occur in the California coastal areas that are subject to marine layer cloud cover. Salt particulate deposit can form inside the Natural Vacuum Leak Detection (NVLD) sensor which may cause intermittent operation prompting the DTC P0442, P0455 or P0456 and check engine light illumination. This bulletin provides the procedure to install a new Air Filter Kit with an updated filter to help prevent entry of the salt particulates. In addition, replace NVLD sensor if DTC P0442, P0455 or P0456 is stored in the Engine Control Module (ECM). |
| 5NPU7G9E02 | 2017-09-22. Service bulletin. Some Veloster (FS) and Sonata Hybrid (YF HEV) vehicles may experience a check engine warning light ON with any of the following DTCs found stored: ? P0442 - Evaporative System (EVAP) - Small Leak ? P0455 - Evaporative System (EVAP) - Large Leak ? P0456 - Evaporative System (EVAP) - Very Small Leak This bulletin provides the service procedure to inspect vehicles for a potential crack found at the evaporative canister insert nuts: ? If crack is not found at canister insert nut: Bracket Kit (includes bracket bolts & rubber washers) and Bolts (and a nut for FS) as listed in the Part Information table (page 2) are to be installed. ? If crack is confirmed at the canister insert nut: Replacement Canister Kit, Bolts (and a Nut for FS) as listed in the Parts Information table (pages 2-3) are to be installed. |
| 5NP-Z2J3V-04 | 2017-08-10. Service bulletin. Some Veloster (FS) and Sonata Hybrid (YF HEV) vehicles may experience a check engine warning light ON with any of the following DTCs found stored: ? P0442 - Evaporative System (EVAP) - Small Leak ? P0455 - Evaporative System (EVAP) - Large Leak ? P0456 - Evaporative System (EVAP) - Very Small Leak |
4 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.