Ford bulletin 23N04
What it saysCertain 2015-2019 Model Year Transit Vehicles Equipped With 3.2L Diesel Engine Exhaust Gas Temperature (EGT) Sensor Replacement. NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Jun 3, 2024, received Mar 5, 2024, about the engine — 2 documents under this number. It names 4 model years (2016–2019). 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.
Certain 2015-2019 Model Year Transit Vehicles Equipped With 3.2L Diesel Engine Exhaust Gas Temperature (EGT) Sensor Replacement. In affected vehicles, the Malfunction Indicator Light (MIL) may illuminate with DTC P04)B, P041C, and/or P041D and the vehicle may have 30% reduction of power due to a broken EGT sensor
Trouble codes it names: P041C P041D P040B 1 of 3 read from the document itself
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 23N04 | Service bulletin | Jun 3, 2024 | 11002694 | PDF, 128 KB |
| 23N04 | Service bulletin | Feb 8, 2024 | 10251254 | PDF, 326 KB |
What the document itself lists
The manufacturer titles it “Customer Satisfaction Program 23N04”.
Part the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| CC1Z-12B591-E | Exhaust Gas Temperature Sensor – Bank 1, Sensor | 1 | eBay Motors → |
Read by machine from the document NHTSA serves (9 pages), read Sep 30, 2026. A part number is shown only where it matches Ford’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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.
Find the exhaust system for the 2019 Transit →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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 4 model years this bulletin names have filed 351 complaints with NHTSA since 2015. 58 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 2016 Ford Transit, the 13 owners who gave an odometer reading for Engine reported it at a median of 74,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Diesel engine fails catastrophically on highway in motion--first a blown piston at 78k miles, turbo failed within 5k miles of engine. Prior to these failures, both this truck and it's twin(bought identically together) developed leaks in the radiators...same location. The sister truck is now at a Ford dealer with a blown engine
2018 Ford Transit · Engine · filed with NHTSA Dec 28, 2020 · ODI 11385232
When driving down the freeway the dash dinged and said engine fault service now. The vehicle lost acceleration and had to coast to the shoulder while vehicles were going around him. Ford says this is a safety feature when a part goes bad so the engine doesn't get damaged. The throttle body had to be replaced.
2016 Ford Transit · Engine · filed with NHTSA Jul 13, 2016 · ODI 10884479
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 group10 other manufacturer communications filed against the Ford Transit 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 |
|---|---|---|---|
| 26L01 | Other | Aug 25, 2026 | Customer Satisfaction Program 26L01 Certain 2018-2024 Model Year Various Vehicles 2.0L Panther Diesel Engine Timing Belt and Tensioner Inter… |
| 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… |
| SSM 54690 | Service bulletin | Mar 26, 2026 | Some 2013-2016 Super Duty vehicles equipped with a 6.7L diesel engine and 2015-2019 Transit vehicles equipped with a 3.2L diesel engine may… |
| SSM 54363 | Service bulletin | Nov 10, 2025 | Some 2021-2025 Expedition/Navigator/F-150/F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis/F-650/F-750/Transit vehicles equipped… |
| SSM 54269 | Service bulletin | Oct 4, 2025 | Some 2021-2025 Expedition/Navigator/F-150/F-Super Duty/F-53 Motorhome/F59 Commercial Stripped Chassis/F-650/F-750/Transit vehicles equipped… |
| SSM 54203 | Service bulletin | Sep 9, 2025 | Some 2025 Bronco Sport/Transit vehicles equipped with R-134a refrigerant systems may exhibit a concern of the air conditioning (A/C) blowing… |
| TSB 25-2363 | Service bulletin | Aug 1, 2025 | Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: * Lack of air flow from inoperative bl… |
| TSB 25-2361 | Service bulletin | Aug 1, 2025 | Some of the vehicles listed in the Model statement above may exhibit oil consumption and blue smoke from the tailpipe. This may be due to th… |
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 23N04 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 23N04 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 23N04 cover?
The manufacturer filed it against 4 model years: 2019 Ford Transit, 2018 Ford Transit, 2017 Ford Transit, 2016 Ford Transit. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.