P0455 on Hyundai vehicles A large leak in the evaporative emissions system — often a fuel cap left off
P0455 is named on 5 Hyundai model years (2016–2017): 4 manufacturer filings and 3 owner reports in NHTSA’s files, across Veloster, Accent, Sonata, Tucson.
Which Hyundai model years name P0455
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2016 Hyundai Veloster | Engine | 3 | — |
| 2017 Hyundai Sonata | Electrical System | — | 1 |
| 2016 Hyundai Accent | Engine | 1 | — |
| 2016 Hyundai Sonata | Power Train | — | 1 |
| 2016 Hyundai Tucson | Fuel/Propulsion System | — | 1 |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
Hyundai filings that name P0455
Source: NHTSA manufacturer communicationsBulletins and campaigns Hyundai filed with NHTSA whose summary names P0455. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 5NP-Z2J3V-04 Service bulletin2017-03-09 · Engine
- 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
- 5NPU7G9E02 Service bulletin2017-01-24 · Equipment — Other — Owners/Service/Other Manual
- 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 t
- 5NP-Q7J2C-07 Service bulletin2018-06-21 · Engine And Engine Cooling — Exhaust System
- Certain 2012-2016 1.6L VELOSTER (FS) vehicles may experience a check engine warning light with the following DTC(s) found stored in the Engine Control Module (ECM): ? DTC P0455 - Evaporative emission system-Leak detected (Large leak) ? DTC P0456 - Evaporative System (EVAP) - Very Small Leak ? DTC P0449 - Canister Closed Valve (CCV) - Restricted Vent Circuit ? DTC P0451 - Fuel Tank PSI Sensor (
- 5NP-R8G4T-07 Service bulletin2018-06-07 · Engine And Engine Cooling — Exhaust System
- Certain 2012-2016 1.6L VELOSTER (FS) vehicles may experience a check engine warning light with the following DTC(s) found stored in the Engine Control Module (ECM): ? DTC P0455 - Evaporative emission system-Leak detected (Large leak) ? DTC P0456 - Evaporative System (EVAP) - Very Small Leak ? DTC P0449 - Canister Closed Valve (CCV) - Restricted Vent Circuit ? DTC P0451 - Fuel Tank PSI Sensor (
What P0455 means
Source: SAE J2012 / OBD-IIA large leak in the evaporative emissions system — often a fuel cap left off.
A stored code names the test that failed, never the part that caused it. The record above is what Hyundai and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs P0455 a known problem on Hyundai vehicles?
It is a documented one: NHTSA's files hold 4 manufacturer filings and 3 owner reports naming P0455 on 5 Hyundai model years (2016–2017). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Hyundai models does P0455 appear on most?
2016 Veloster (3 documents), 2016 Accent (1 document), 2017 Sonata (1 document).
Does P0455 on a Hyundai mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.