Kia bulletin TSB_TRA110
What it saysThis bulletin provides information to upgrade the Dual Clutch Transmission (DCT) software logic on some 2024MY Niro P/HEV (SG2 P/HEV) produced from October 18, 2023 through November 18, 2023. NHTSA’s full summary ↓
Kia filed this with NHTSA as a service bulletin dated Apr 29, 2024, received May 6, 2024, about the power train. It names 1 model year (2024). 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 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.
TECHNICAL SERVICE BULLETIN: 6DCT MIL ON DTC (P073F73) LOGIC & LEARNING FUNCTION IMPROVEMENT - This bulletin provides information to upgrade the Dual Clutch Transmission (DCT) software logic on some 2024MY Niro P/HEV (SG2 P/HEV) produced from October 18, 2023 through November 18, 2023. The affected vehicles may exhibit a MIL 'ON' with DTC P073F73 and, in some cases, engage 2nd gear while accelerating from a stop instead of 1st gear.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB_TRA110 | Service bulletin | Apr 29, 2024 | 10253813 | PDF, 235 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 1 model year this bulletin names have filed 19 complaints with NHTSA since 2015. 8 of them name Electrical System, Power Train — 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.
The 12-volt battery system in my 2024 Kia Niro (VIN: ) has suffered two total failures in under one year of ownership (approx. 10,000 miles). In both instances, the vehicle was completely unresponsive, with no power to essential systems. Safety Risks and Incidents: 1. : Vehicle experienced a total power loss.
2024 Kia Niro · Electrical System · filed with NHTSA Jan 7, 2026 · ODI 11709314
The contact owns a 2024 Hyundai Niro Hybrid. The contact stated that while at a stop light the warning message "transmission overheating" had displayed and the vehicle did not drive forward.
2024 Kia Niro · Power Train · filed with NHTSA May 18, 2026 · ODI 11738543
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 power train
Source: same model, same component group5 other manufacturer communications filed against the Kia Niro under the same component group (power train), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SC345Z | Service bulletin | Oct 9, 2025 | TECHNICAL SERVICE BULLETIN: SUBSEQUENT REPAIR ACTION: FRONT MOTOR REDUCTION GEAR ASSEMBLY REPLACEMENT (SC345Z) - This bulletin provides info… |
| SC345 | Service campaign | Aug 22, 2025 | TECHNICAL SERVICE BULLETIN: VOLUNTARY SERVICE CAMPAIGN FRONT MOTOR REDUCTION GEAR OIL REPLACEMENT (SC345) - This bulletin provides informati… |
| TSB_TRA046_R5 | Service bulletin | Apr 17, 2025 | TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. New/rev… |
| TSB_TRA046_R4 | Service bulletin | May 16, 2024 | This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush… |
| TSB_TRA046_R3 | Service bulletin | Nov 18, 2022 | TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin provides information relating to the correct transmission f… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Kia, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Kia TSB_TRA110 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 TSB_TRA110 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 Kia warranty extension on file lists the ones Kia has filed.
Which vehicles does TSB_TRA110 cover?
The manufacturer filed it against 1 model year: 2024 Kia Niro. 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: Niro P/HEV (SG2 P/HEV): built 18 Oct 2023 – 18 Nov 2023 — the build date is on the certification label in the driver’s door jamb.