Ford bulletin SSM 55283
What it saysSome 2023-2024 Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may exhibit an "Engine Coolant Over-Temperature" message and an illuminated MIL with DTCs P1285 and/or P1299 stored in the PCM during hard… NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Oct 27, 2026, about the engine. It names 2 model years (2023–2024). 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 NHTSA’s summary states it — build dates and equipment as the manufacturer filed them. The dealer checks the VIN and the build date on the door jamb; a vehicle outside the window is not covered by this bulletin.
Some 2023-2024 Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may exhibit an "Engine Coolant Over-Temperature" message and an illuminated MIL with DTCs P1285 and/or P1299 stored in the PCM during hard acceleration or under high load conditions. If the concern can be replicated under these conditions, refer to Workshop Manual (WSM), Section 303-03A > Diagnosis and Testing > Engine Temperature > Pinpoint Test DL "Cylinder Head Temperature (CHT) Sensor" and repair as directed. Do not attempt to modify the orientation of the CHT sensor. If diagnostics lead to CHT replacement, inspect connector C1164 for terminal issues and replace the pigtail if necessary. If the concern persists, thoroughly perform the Engine Cooling System Flushing procedure in WSM, Section 303-03A > General Procedures. Do not use the VC1 flush additive.<br/><br/> When performing the fill and bleed procedure, it is important that the vacuum filling and bleeding aspect of the procedure is performed thoroughly. Not fully bleeding the cooling system can lead to air trapped in the cylinder head.<br/><br/> If the concern persists
Trouble codes it names: C1164 P1285 P1299
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| SSM 55283 | Service bulletin | Oct 27, 2026 | 11038696 | PDF, 76 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 2 model years this bulletin names have filed 278 complaints with NHTSA since 2015. 134 of them name Engine, 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.
On the 2023 Ford Bronco Sport, the 12 owners who gave an odometer reading for Electrical System reported it at a median of 25,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
The contact owns a 2023 Ford Bronco Sport. The contact was informed by his wife that when the start button was depressed, there was a loud boom coming from the vehicle. There was an odor of smoke coming into the cabin of the vehicle, but there was no smoke present. There was also a sizzling sound coming from the vehicle.
2023 Ford Bronco Sport · Electrical System · filed with NHTSA Feb 5, 2024 · ODI 11569967
My backup camera one two separate occasions has not operated properly. First time it never showed a vehicle had come up behind me. Didn’t go off with any notice. I backed into a car. Second time a man with a cart walk behind as I was backing out no notice. There is a recall on review camera but not on my vin
2024 Ford Bronco Sport · Electrical System · filed with NHTSA May 30, 2025 · ODI 11663968
While driving on I-95 southbound, the vehicle shut off unexpectedly. This occurred without any warnings, no warning lights in dashboard flashed. This occurred for a total of three times. I had no power, no braking capabilities, no control over the vehicle
2023 Ford Bronco Sport · Engine · filed with NHTSA Mar 19, 2024 · ODI 11578273
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 group22 other manufacturer communications filed against the Ford Bronco Sport 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 |
|---|---|---|---|
| SSM 55211 | Over-the-air update | Oct 2, 2026 | 2023-2026 Escape and 2025-2026 Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may require removal of the turbocharger wastegate… |
| 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… |
| 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 54540 | Service bulletin | Jan 31, 2026 | Some 2025-2026 Escape/Bronco Sport vehicles equipped with a 1.5L EcoBoost engine may require replacement of the engine thermostat due to var… |
| 25M02 | Other | Dec 12, 2025 | Customer Satisfaction Program 25M02 Certain 2021-2024 Model Year Bronco Sport and 2020-2022 Escape with 1.5L Engine and 8F35 Transmission U… |
| TSB 25-2511 | Service bulletin | Oct 24, 2025 | This article supersedes TSB 25-2428 to update the Parts List. Some of the vehicles listed in the Model statement above may exhibit a loss of… |
| 25N03 | Other | Oct 15, 2025 | Customer Satisfaction Program 25N03 Certain 2021-2023 Model Year Bronco Sport and 2020-2022 Escape with 1.5L Engine and 8F35 Transmission.… |
| TSB 25-2428 | Service bulletin | Sep 10, 2025 | This article supersedes TSB 25-2063 to update the Service Procedure. Some of the vehicles listed in the Model statement above may exhibit a… |
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 SSM 55283 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 SSM 55283 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 SSM 55283 cover?
The manufacturer filed it against 2 model years: 2024 Ford Bronco Sport, 2023 Ford Bronco Sport. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.