Ford bulletin TSB 23-2337
What it saysSome 2022-2023 F-150 hybrid vehicles equipped with a 3.5L PowerBoost engine may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P0420 and/or P0430 stored in the powertrain control module (PCM). NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Oct 31, 2023, received Nov 3, 2023, about the engine. It names 2 model years (2022–2023). 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 communicationSome 2022-2023 F-150 hybrid vehicles equipped with a 3.5L PowerBoost engine may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P0420 and/or P0430 stored in the powertrain control module (PCM). This may be due to high sulfur content in the fuel. To correct the condition, follow the Service Procedure to remove sulfur from the catalytic converters.
Trouble codes it names: P0420 P0430
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB 23-2337 | Service bulletin | Oct 31, 2023 | 10244800 | PDF, 77 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.
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 2 model years this bulletin names have filed 1,309 complaints with NHTSA since 2015. 426 of them name Power Train — 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 2022 Ford F-150, the 55 owners who gave an odometer reading for Power Train reported it at a median of 30,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Passenger side rear axle retention bolt sheared off. Discovered during routine maintenance / tire rotation. Unknown how safety was at risk -- dealer told me once discovered that the vehicle would be repaired under warranty, and they could do in 24 hours, so no discussion about unsafe to drive as others have reported they were told.
2022 Ford F-150 · Power Train · filed with NHTSA Nov 20, 2022
I purchased the truck 2 weeks ago brand new and it has a total of 570 miles on it. After not being used for one day, the truck would not start at all. I receive a warning indicating that I should stop safely now, that full power accessory mode is on and a check engine light. I connected a OBD scanner but no codes were generated.
2023 Ford F-150 · Engine · filed with NHTSA Oct 26, 2023
EIWE (Electronic Integrated Wheel End) failure or malfunction. Ford has multiple Field Service Engineers aware of the issue with no fix found. Multiple vehicles not only at one dealership but across the country have confirmed issues. Ford Customer Relations is aware and has an open case with me and many other owners.
2023 Ford F-150 · Power Train · filed with NHTSA Dec 9, 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 engine
Source: same model, same component group55 other manufacturer communications filed against the Ford F-150 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 |
| 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… |
| 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… |
| 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… |
| TSB 26-2116 | Service bulletin | Apr 9, 2026 | This article supersedes TSB 25-2323 to update the Service procedure, Parts list, and add a clarification note about Cost Cap and Prior appro… |
| 24N12 S2 | Other | Mar 31, 2026 | Certain 2021 - 2022 Model Year Various Vehicles Engine Valve Inspection Test This submission includes : Technical Instructions Updated word… |
| SSM 54678 | Service bulletin | Mar 20, 2026 | Some 2021-2026 F-150 vehicles equipped with a 5.0L/5.2L engine, 2021-2025 F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis vehicl… |
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 23-2337 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 23-2337 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 23-2337 cover?
The manufacturer filed it against 2 model years: 2023 Ford F-150, 2022 Ford F-150. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.