Hyundai bulletin 22-01-023H-2
What it saysA class action lawsuit against Hyundai Motor America (“HMA”) alleges that certain Hyundai vehicles (“Class Vehicles”) were manufactured, marketed, sold, and/or leased with an engine defect that can result in sudden… NHTSA’s full summary ↓
Hyundai filed this with NHTSA as a service bulletin dated Jul 11, 2023, received Dec 7, 2022, about the engine — 3 documents under this number. It names 17 model years (2016–2021). 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 communicationA class action lawsuit against Hyundai Motor America (“HMA”) alleges that certain Hyundai vehicles (“Class Vehicles”) were manufactured, marketed, sold, and/or leased with an engine defect that can result in sudden engine seizure, stalling, engine failure, and in some circumstances, engine fire, and that some owners and lessees of Class Vehicles have been improperly denied repairs under warranty. Neither HMA nor Hyundai Motor Company have been found liable for any of the claims alleged in the lawsuit. The parties have instead reached a voluntary settlement (the “Settlement”) to avoid lengthy litigation and to provide owners of Class Vehicles certain benefits.
Trouble codes it names: P1326 all 1 read from the document itself; NHTSA’s summary names none
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 22-01-023H-2 | Service bulletin | Jul 11, 2023 | 10240082 | PDF, 1,062 KB |
| 22-01-023H-2 | Service bulletin | Nov 3, 2022 | 10227320 | not found |
| 22-01-023H-2 | Service bulletin | Nov 3, 2022 | 10227317 | not found |
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.
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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 17 model years this bulletin names have filed 8,273 complaints with NHTSA since 2015. 4,009 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 Tucson, the 195 owners who gave an odometer reading for Engine reported it at a median of 60,000 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
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
The contact owns a 2016 Hyundai Tucson. The contact stated that while driving at unknown speeds, the vehicle stalled without any warning. The contact mentioned that the failure recurred intermittently. The vehicle was taken to the dealer. The technician was unable to diagnose the failure. The manufacturer was made aware of the failure.
2016 Hyundai Tucson · Engine · filed with NHTSA Jun 1, 2016
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 group33 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 |
|---|---|---|---|
| 26-EM-014H | Service bulletin | Sep 16, 2026 | Some Tucson (TL) vehicles equipped with a 2.0L engine may exhibit a continued DTC P132600 after an ECM logic update has been performed per T… |
| 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… |
| 26-EM-009H | Service bulletin | Mar 24, 2026 | Some Sonata (DN8) and Tucson (NX4/NX4A/NX4M) vehicles equipped with the 2.5L Theta III GDI engine may display a warning lamp and store Diagn… |
| 26-EM-006H | Service bulletin | Mar 6, 2026 | Some Elantra (CN7) vehicles equipped with the 2.0L AKS NU PE engine may exhibit an illuminated Check Engine light for diagnostic trouble cod… |
| 26-EM-004H | Service bulletin | Feb 5, 2026 | Some Tucson (NX4, NX4A) vehicles may have DTC P218100, P2181F0, and/or P2181F1 (Cooling System Performance) set in the Electronic Control Un… |
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 22-01-023H-2 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 22-01-023H-2 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.
Which vehicles does 22-01-023H-2 cover?
The manufacturer filed it against 17 model years: 2020 Hyundai Elantra, 2019 Hyundai Elantra, 2018 Hyundai Elantra, 2017 Hyundai Elantra, 2016 Hyundai Elantra, 2019 Hyundai Sonata and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.