Ford bulletin TSB 23-2400
What it saysThis article supersedes TSB 23-2086 to update the parts list. NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Dec 6, 2023, received Jan 5, 2024, about the electrical system. It names 3 model years (2021–2023). 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 communicationThis article supersedes TSB 23-2086 to update the parts list. Some 2021-2023 Bronco vehicles may encounter a Sta-bar Disconnect Service Required message in the instrument panel cluster and an illuminated warning light with any of the following diagnostic trouble codes (DTCs) stored in the chassis control module (CHCM): C103A, C1A99, C1B03, C1B07, C1B14 and/or B1A67. To correct the condition, follow the Service Procedure to address water intrusion and reprogram the CHCM.
Trouble codes it names: B1A67 C103A C1A99 C1B03 C1B07 C1B14
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB 23-2400 | Service bulletin | Dec 6, 2023 | 10248359 | 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.
Doing the repair yourself, or pricing it before the shop does? Search the part by fitment on eBay Motors — the listing and the price are the seller’s.
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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 3 model years this bulletin names have filed 833 complaints with NHTSA since 2015. 51 of them name Electrical System — 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.
Bronco base had no option for tow package but for $195 option 66C is a factory install auxiliary switches. Switch 1 is wired to 30 amps or 360 watts @12 v. This option has 2 parts. The second parts are not attached.
2022 Ford Bronco · Electrical System · filed with NHTSA Aug 23, 2022
2nd day of ownership and rear view camera failed. Called Ford and they said it was two months until they have an appointment
2023 Ford Bronco · Electrical System · filed with NHTSA Feb 8, 2023
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 electrical system
Source: same model, same component group75 other manufacturer communications filed against the Ford Bronco under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Ford list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB 26-2380 | Service bulletin | Sep 24, 2026 | This article supersedes TSB 25-2575 to update the Parts list to add the applicable body wiring harnesses and underbody shield bolts. Some ve… |
| ECG-26.2.12.3 | Over-the-air update | Sep 16, 2026 | Quality improvements include: -ePrivacy enhancements |
| SYNC-26.2.8.3 | Over-the-air update | Aug 18, 2026 | Quality improvements include: -Privacy robustness updates -Resolves various user interface and data display bugs within the Towing menu |
| SSM 55079 | Service bulletin | Aug 13, 2026 | Some 2025-2026 Bronco vehicles equipped with a 7 speaker audio system (minor feature code IDBAL) may exhibit diagnostic trouble codes (DTC)… |
| SSM 55031 | Service bulletin | Jul 23, 2026 | Some 2021-2026 Ford/Lincoln vehicles may exhibit various symptoms including but not limited to the auto start/stop system not operating as i… |
| SSM 55028 | Service bulletin | Jul 21, 2026 | Some 2021-2024 Ford and Lincoln vehicles may exhibit an "Updating SYNC" message on the vehicle center display screen after an over the air… |
| SSM 55021 | Service bulletin | Jul 20, 2026 | Some 2025-2026 Bronco/Bronco Sport/Corsair/F-150/F-Super Duty/Maverick/Mustang/Mustang Mach-E/Ranger vehicles may exhibit a no audio/sound c… |
| ABS-26.11.1.2B | Over-the-air update | Jul 16, 2026 | Quality improvements include: -ABS software update that filters out intermittent, invalid wheel-speed sensor data, preventing temporary shut… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Ford, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Ford TSB 23-2400 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 23-2400 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 23-2400 cover?
The manufacturer filed it against 3 model years: 2023 Ford Bronco, 2022 Ford Bronco, 2021 Ford Bronco. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.