Ford bulletin TSB 26-2406
Ford filed this with NHTSA as a service bulletin dated Sep 5, 2026, received Sep 12, 2026, about the unknown or other. It names 6 model years (2026). 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 communicationSome of the vehicles listed in the Model statement above may exhibit at least one of the following conditions: Poor shift quality Illuminated powertrain malfunction (wrench) indicator with diagnostic trouble codes (DTCs) P2704 and P0771 stored in the powertrain control module (PCM)/transmission control module (TCM) This may be due to sticking valves in the main control valve body and/or damaged E clutch friction plates and/or E clutch steel plates. Additional model information: 6.7L Diesel Engine 7.3L Gas Engine 10R140 Automatic Transmission
Document filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| TSB 26-2406 | Service bulletin | Sep 5, 2026 | 11037298 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. 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. Quote it 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: 2026 Ford F-550 SD; 2026 Ford F-650 SD; 2026 Ford F-750 SD.
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 Ford TSB 26-2406 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 26-2406 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 TSB 26-2406 cover?
The manufacturer filed it against 6 model years: 2026 Ford F-250 Super Duty, 2026 Ford F-350 Super Duty, 2026 Ford F-450 Super Duty, 2026 Ford F-550 SD, 2026 Ford F-650 SD, 2026 Ford F-750 SD. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.