Nissan bulletin NTB23-023B
Nissan filed this with NHTSA as a service bulletin dated Feb 19, 2025, received Feb 25, 2025, about the power train. It names 14 model years (2016–2024). 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationFLUID LEAK FROM THE FRONT DIFFERENTIAL CASE ACTUATOR MOTOR PLASTIC THREADS SERVICE INFORMATION Figure 1 Figure 2 If the front differential has a fluid leak coming from the actuator motor plastic threads (Figure 1): a. Place an alignment mark on the splined actuator body and the gear carrier (Figure 2). b. Remove the actuator and thoroughly clean the threads, making sure not to allow RTV to fall into the differential case. c. Once clean, apply Three Bond sealant to the threads, and then reinstall the actuator motor, making sure to line up the alignment marks. d. Check the front differential gear oil level and top to specification. o Refer to the ESM: TRANSMISSION & DRIVELINE > DRIVELINE > FRONT FINAL DRIVE: MA235/MA210 > PERIODIC MAINTENANCE > FRONT DIFFERENTIAL GEAR OIL DO NOT replace the front differential due to a fluid leak from the actuator motor plastic threads unless there has been consequential damage due to fluid loss (bearing failure or gear noise) to the front differential.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| NTB23-023B | Service bulletin | Feb 19, 2025 | 11014473 | not yet checked |
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 themAlso filed against model years this site has no page for: 2024 Nissan Titan XD.
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is Nissan NTB23-023B 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 NTB23-023B 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 NTB23-023B cover?
The manufacturer filed it against 14 model years: 2024 Nissan Titan, 2023 Nissan Titan, 2022 Nissan Titan, 2021 Nissan Titan, 2020 Nissan Titan, 2019 Nissan Titan and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.