Hyundai service campaign 9C2
What it saysCertain 2019 – 2020 model year Santa Fe, 2017 – 2018 model year Santa Fe Sport, 2015 – 2019 model year Sonata, and 2018 – 2021 model year Tucson vehicles may exhibit elevated engine-out emissions. NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service campaign dated May 21, 2026, received Dec 2, 2025, about the engine — 19 documents under this number: 26-01-013H-2 DN, 26-01-013H-2 TSB, 9C2 060518, 9C2 DCS 260518 and 15 more. It names 13 model years (2016–2021). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
Certain 2019 – 2020 model year Santa Fe, 2017 – 2018 model year Santa Fe Sport, 2015 – 2019 model year Sonata, and 2018 – 2021 model year Tucson vehicles may exhibit elevated engine-out emissions. Hyundai is conducting a service campaign to update the Engine Control Module (ECM) Software for vehicles equipped with the (2.4 GDI) Theta II engine to improve engine combustion and fuel trim adaptations.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 26-01-013H-2 DN | Service campaign | May 21, 2026 | 11033700 | PDF, 605 KB |
| 26-01-013H-2 TSB | Service campaign | May 21, 2026 | 11033699 | PDF, 752 KB |
| 9C2 060518 | Service campaign | May 19, 2026 | 11033705 | PDF, 99 KB |
| 9C2 DCS 260518 | Service campaign | May 19, 2026 | 11033701 | PDF, 56 KB |
| 9C2 OL | Service campaign | Apr 14, 2026 | 11031416 | PDF, 170 KB |
| 9C2 Susp DCS | Service campaign | Mar 30, 2026 | 11030625 | PDF, 45 KB |
| 9C2 Susp DN | Service campaign | Mar 30, 2026 | 11030619 | not found |
| 26-01-013H-1 DCS | Service campaign | Mar 6, 2026 | 11029941 | PDF, 92 KB |
| 26-01-013H-1 DN | Service campaign | Mar 4, 2026 | 11029940 | PDF, 525 KB |
| 26-01-013H-1 TSB | Service campaign | Mar 4, 2026 | 11029939 | PDF, 712 KB |
| 26-01-013H DCS | Service campaign | Feb 7, 2026 | 11028671 | PDF, 130 KB |
| 26-01-013H DN | Service campaign | Feb 6, 2026 | 11028670 | PDF, 485 KB |
| 26-01-013H TSB | Service campaign | Feb 6, 2026 | 11028669 | PDF, 704 KB |
| 25-01-087H-1 DCS | Service campaign | Dec 15, 2025 | 11027008 | PDF, 91 KB |
| 25-01-087H-1 TSB | Service campaign | Dec 15, 2025 | 11027005 | PDF, 725 KB |
| 25-01-087H-1 DN | Service campaign | Dec 15, 2025 | 11027002 | PDF, 521 KB |
| 25-01-087H DCS | Service campaign | Nov 26, 2025 | 11025965 | PDF, 91 KB |
| 25-01-087H DN | Service campaign | Nov 26, 2025 | 11025964 | PDF, 536 KB |
| 25-01-087H DCS | Service campaign | Nov 26, 2025 | 11025963 | PDF, 710 KB |
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 themA 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 13 model years this bulletin names have filed 6,675 complaints with NHTSA since 2015. 4,565 of them name Engine, Electrical System — 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.
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
While driving the car getting error message on dashboard "Check Hybrid System Turn Off Engine", The Gas engine turn off and switch to continue on electric till able to pull on the side of the road. Turn Off engine, wait a min. Start car again and working fine. This issue appears randomly many times in the last two years while driving.
2016 Hyundai Sonata · Electrical System · filed with NHTSA Mar 30, 2023 · ODI 11514685
The air conditioner quits working after a few minutes if the temperature is over 80 degrees. This has happened multiple times, at least 6 times. I took the car into Hyundai dealer and they said they could fine nothing wrong with it. As soon as we got it back from the dealer it happened again. Heat stroke was our only safety concern.
2020 Hyundai Santa Fe · Electrical System · filed with NHTSA Jul 21, 2021 · ODI 11425754
In depth: 2020 Hyundai Santa Fe engine problems → · 2019 Hyundai Santa Fe engine problems → · 2018 Hyundai Santa Fe engine problems → · 2017 Hyundai Santa Fe 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 group39 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-016H | Service bulletin | Oct 8, 2026 | Some vehicles equipped with internal combustion engines may exhibit higher-than-expected engine oil consumption. This bulletin outlines the… |
| 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… |
| 26-EE-003H | Service bulletin | Apr 18, 2026 | Some vehicles may exhibit difficulty starting in cold weather. This bulletin provides the procedure to perform an inspection on the starter… |
| 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… |
| TXX8 | Warranty extension | Feb 11, 2026 | Certain 2013 – 2019 model year Santa Fe/Santa Fe XL vehicles equipped with 3.3L Lambda II GDI engines may experience abnormal engine noise o… |
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 9C2 a recall?
No. A service campaign 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 9C2 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does 9C2 cover?
The manufacturer filed it against 13 model years: 2020 Hyundai Santa Fe, 2019 Hyundai Santa Fe, 2018 Hyundai Santa Fe, 2017 Hyundai Santa Fe, 2019 Hyundai Sonata, 2018 Hyundai Sonata and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: built 23 May 2018 – 23 Aug 2021; built 1 May 2014 – 30 Sep 2019; built 30 Jan 2018 – 4 Feb 2021 — the build date is on the certification label in the driver’s door jamb.