Ford bulletin 24N12 S2
What it saysCertain 2021 - 2022 Model Year Various Vehicles Engine Valve Inspection Test This submission includes : Technical Instructions Updated wording and description with additional photo. NHTSA’s full summary ↓
Ford filed this with NHTSA as a manufacturer communication dated Mar 31, 2026, received Apr 7, 2026, about the engine. It names 12 model years across Ford and Lincoln (2021–2022). A manufacturer communication 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.
One page for every brand it was filed under. Each brand’s bulletins: Ford · Lincoln.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationCertain 2021 - 2022 Model Year Various Vehicles Engine Valve Inspection Test This submission includes : Technical Instructions Updated wording and description with additional photo.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 24N12 S2 | Other | Mar 31, 2026 | 11030911 | PDF, 878 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 themFord 8 model years
Lincoln 4 model years
A 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 12 model years this bulletin names have filed 3,779 complaints with NHTSA since 2015. 387 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 2021 Ford F-150, the 30 owners who gave an odometer reading for Engine reported it at a median of 48,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Catalytic converter and it was confirmed by independent service center my car only has 88k miles There is a catalytic converter recall on year 2020 but Ford refuses to do a recall for the year 2021 and I have another car that have the same catalytic converter problem with only 84k miles and it’s also 2021 and Ford refuses to do any work…
2021 Ford Explorer · Engine · filed with NHTSA Jul 31, 2026
2021 Lincoln Nautilus Reserve 2.7-liter twin-turbocharged V6 with coolant intrusion caused by a blown head gasket on cylinder #6. Vehicle would not accelerate properly and lurch forward when the gas pedal was pressed over 25%. The issue was taken to the shop and not found. The issue progressed and was taken to the shop a second time.
2021 Lincoln Nautilus · Engine · filed with NHTSA Jun 1, 2026
The contact owns a 2021 Ford Edge. The contact stated while his son was driving 60 MPH, the vehicle was stalled. The contact stated several unknown warning lights were illuminated. The vehicle was not drivable. The contact arrived at the location and became aware that the serpentine belt was fractured.
2021 Ford Edge · Engine · filed with NHTSA Sep 27, 2022
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 group91 other manufacturer communications filed against these Ford models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Ford list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 25L05 | Other | Sep 2, 2026 | Certain 2024-2025 Model Year F-150 Vehicles Equipped with 2.7L Engine Vehicle Emission Control Information (VECI) Label Update |
| TSB 26-2349 | Service bulletin | Jul 31, 2026 | This bulletin supersedes 25-2415. Reason for update: To add production build dates of the right-side engine valve cover. Some of the vehicle… |
| 25M01 | Other | Jul 28, 2026 | Customer Satisfaction Program 25M01 Certain 2021 Model Year F-150 3.0L Diesel Engine and 2020-2022 Model Year Super Duty with 6.7L Diesel En… |
| PT-26.11.3 | Over-the-air update | Jul 23, 2026 | 25S75 Recall remedy -Powertrain Control Module update to introduce logic to prevent low pressure fuel pump binding and maintain fuel flow to… |
| 25B33 | Other | Jun 1, 2026 | Certain 2023-2025 Model Year Escape and Corsair, 2024-2025 Model Year Nautilus, 2025-2026 Model Year Bronco Sport and 2025 Model Year Maver… |
| TSB 26-2233 | Service bulletin | May 14, 2026 | This article supersedes TSB 26-2116 to clarify the prior approval statement. Some of the vehicles listed in the model statement above may ex… |
| 25B51 | Other | May 9, 2026 | Certain 2021-2024 Model Year Bronco, 2021-2024 Model Year Bronco Sport, 2020-2022 Model Year Corsair and Escape, 2016-2024 Model Year Explor… |
| SSM 54795 | Service bulletin | May 4, 2026 | Some 2021-2023 F-150 vehicles equipped with a 3.5L PowerBoost engine and 2020-2026 Explorer vehicles equipped with a 3.3L hybrid engine may… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Ford and Lincoln, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ford 24N12 S2 a recall?
No. A manufacturer communication 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 24N12 S2 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 24N12 S2 cover?
The manufacturer filed it against 12 model years across 2 brands (Ford and Lincoln): 2022 Ford Bronco, 2021 Ford Bronco, 2022 Ford Edge, 2021 Ford Edge, 2022 Ford Explorer, 2021 Ford Explorer and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.