Hyundai bulletin 26-EM-016H
What it saysSome vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service bulletin dated Oct 8, 2026, received Oct 14, 2026, about the engine — 1 document under this number: 26-EM-016H TSB. It names 74 model years (2016–2027). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationSome vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the combustion chamber cleaning procedure for vehicles diagnosed with this condition. All internal combustion engines consume some engine oil during normal operation, depending on driving conditions and mileage, and this procedure should only be performed when deemed necessary based on inspection and diagnosis of the vehicle as outlined in TSB 26-EM-015H, Engine Oil Consumption – Inspection & Repair Guidelines, or the latest revision.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26-EM-016H TSB | Service bulletin | Oct 8, 2026 | 11038458 | PDF, 2,154 KB |
What the document itself lists
The manufacturer titles it “COMBUSTION CHAMBER CLEANING PROCEDURE”.
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 00232-19115 | — | — |
Read by machine from the document NHTSA serves (23 pages), read Oct 15, 2026. A part number is shown only where it matches Hyundai’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themand 34 more on this site: 2021 Hyundai Santa Fe, 2020 Hyundai Santa Fe, 2019 Hyundai Santa Fe, 2018 Hyundai Santa Fe, 2017 Hyundai Santa Fe, 2016 Hyundai Santa Fe, 2026 Hyundai Sonata, 2025 Hyundai Sonata, 2024 Hyundai Sonata, 2023 Hyundai Sonata, 2022 Hyundai Sonata, 2021 Hyundai Sonata, 2020 Hyundai Sonata, 2019 Hyundai Sonata, 2018 Hyundai Sonata, 2017 Hyundai Sonata, 2016 Hyundai Sonata, 2026 Hyundai Tucson, 2025 Hyundai Tucson, 2024 Hyundai Tucson, 2023 Hyundai Tucson, 2022 Hyundai Tucson, 2021 Hyundai Tucson, 2020 Hyundai Tucson, 2019 Hyundai Tucson, 2018 Hyundai Tucson, 2017 Hyundai Tucson, 2016 Hyundai Tucson, 2022 Hyundai Veloster, 2021 Hyundai Veloster, 2020 Hyundai Veloster, 2019 Hyundai Veloster, 2017 Hyundai Veloster, 2016 Hyundai Veloster.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 74 model years this bulletin names have filed 16,277 complaints with NHTSA since 2015. 6,903 of them name Engine — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
On the 2017 Hyundai Santa Fe, the 212 owners who gave an odometer reading for Engine reported it at a median of 72,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
While Driving on the freeway my CEL came on and started blinking i loss power and slowly got to the first exit on the freeway. A week later i brought the vehicle to the Patriot Hyundai in Elmonte CA., i mentioned the extended powertrain warranty Ref# TXXM and the dealer held on to my vehicle for 40 days giving me excuses and not calling…
2017 Hyundai Veloster · Engine · filed with NHTSA Jan 10, 2022 · ODI 11446956
The Engine stalled completely at highway speeds. It was then towed to the dealership and was diagnosed with engine rod bearing failure. Hyundai is denying the warranty extension for this engine failure based on an incomplete 'Service Campaign 966' that does not appear on the NHTSA public recall database, leaving consumers unnotified of…
2017 Hyundai Elantra · Engine · filed with NHTSA Aug 8, 2026 · ODI 11755675
A recall letter from Hyundai on my 2018 Santa Fe on a knock sensor took it to my dealership they did what ever the recall was 3 miles down the road my car went intp limp mode took me from 70mph to 30 call the dealer had to limp it back they hah it for 3 weeks had the wire harness replaced asked they had any trouble with this as we were…
2018 Hyundai Santa Fe · Engine · filed with NHTSA Jul 19, 2019 · ODI 11233455
In depth: 2020 Hyundai Elantra engine problems → · 2019 Hyundai Elantra engine problems → · 2018 Hyundai Elantra engine problems → · 2017 Hyundai Elantra engine problems →
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the engine
Source: same model, same component group53 other manufacturer communications filed against these Hyundai models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Hyundai list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 9C7 | Service campaign | Oct 9, 2026 | Certain Santa Fe Hybrid (TM HEV), Santa Fe Plug-in Hybrid (TM PHEV), Tucson Hybrid (NX4 HEV), and Tucson Plug-in Hybrid (NX4 PHEV) vehicles… |
| 26-EM-017H | Service bulletin | Oct 8, 2026 | Certain Palisade (LX2) and Santa Fe (NC) vehicles equipped with Lambda II 6-cylinder engines may exhibit higher-than-expected engine oil con… |
| 26-EM-015H | Service bulletin | Oct 7, 2026 | Certain vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin provides t… |
| 9D1 | Service campaign | Sep 22, 2026 | Certain Kona (OS) vehicles equipped with the 1.6T-GDI engine may exhibit elevated engine-out emissions that may not meet engine-out NOx… |
| 9D3 | Service campaign | Sep 11, 2026 | Certain Elantra (ADA) vehicles may have been incorrectly updated with Cylinder Noise Detection System (CNDS) software that can set DTC P1327… |
| 9C2 | Service campaign | May 21, 2026 | Certain 2019 – 2020 model year Santa Fe, 2017 – 2018 model year Santa Fe Sport, 2015 – 2019 model year Sonata, and 2018 – 2021 model year Tu… |
| T6G | Warranty extension | Mar 26, 2026 | This TSB references the Op codes to use for claim submission and the Parts required based on the vehicle’s inspection results from TSB 22-01… |
| T6G TXXM | Warranty extension | Mar 26, 2026 | This TSB references the Op codes to use for claim submission and the Parts required based on the vehicle’s inspection results from TSB 22-01… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Hyundai, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Hyundai 26-EM-016H a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 26-EM-016H repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way. Every Hyundai warranty extension on file lists the ones Hyundai has filed.
Which vehicles does 26-EM-016H cover?
The manufacturer filed it against 74 model years: 2022 Hyundai Accent, 2021 Hyundai Accent, 2020 Hyundai Accent, 2019 Hyundai Accent, 2018 Hyundai Accent, 2017 Hyundai Accent and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.