Ford bulletin 23N01
What it saysCertain 2015-2019 Model Year Transit Vehicles with 3.2L Diesel Engine - Crankcase Ventilation Hose Assembly Replacement and Powertrain Control Module Software Update NHTSA’s full summary ↓
Ford filed this with NHTSA as a service bulletin dated Sep 30, 2023, received Oct 3, 2023, about the power train. 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 with 3.2L Diesel Engine - Crankcase Ventilation Hose Assembly Replacement and Powertrain Control Module Software Update
Trouble codes it names: P04DB P04E2 P04E3 all 3 read from the document itself; NHTSA’s summary names none
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 23N01 | Service bulletin | Sep 30, 2023 | 10243426 | PDF, 3,456 KB |
What the document itself lists
The manufacturer titles it “Customer Satisfaction Program 23N01”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| CK4Z-6A664-B | Crankcase Ventilation Hose (2015-2017MY) | 1 | eBay Motors → |
| JK4Z-6A664-C | Crankcase Ventilation Hose (2018-2019MY) | 1 | eBay Motors → |
| 3U2Z-14A088-AB | Splice Kit (18-22 gauge wire) (Kit can complete | 2 | eBay Motors → |
Read by machine from the document NHTSA serves (20 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.
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. 187 of them name Power Train, Engine, Fuel/Propulsion 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 2016 Ford Transit, the 39 owners who gave an odometer reading for Power Train reported it at a median of 105,000 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
The contact owns a 2016 Ford Transit. While the vehicle was at the a local dealer located at 15330 palmdale rd, victorville, ca 92392 for inspection, it was noticed that the drive line coupler was fractured. The dealer replaced the drive line coupler. The vehicle was repaired. The manufacturer was made aware of the failure.
2016 Ford Transit · Power Train · filed with NHTSA May 24, 2017 · ODI 10991430
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
In depth: 2016 Ford Transit transmission and drivetrain problems →
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 power train
Source: same model, same component group41 other manufacturer communications filed against the Ford Transit under the same component group (power train), newest first. The eight newest are listed; the rest are on the Ford list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB 26-2408 v2 | Service bulletin | Oct 22, 2026 | This bulletin supersedes 26-2309. Reason for update: update the Model section to remove Aviator 10R80, update theParts list to add 3.3L to W… |
| TSB 26-2431 | Service bulletin | Oct 21, 2026 | This bulletin supersedes 26-2226. Reason For Update: update the Service Procedure for 2021-2022 F-150 3.5L EcoBoost vehicles with the new Fo… |
| TSB 26-2408 | Service bulletin | Sep 22, 2026 | This bulletin supersedes 26-2309. Reason For Update: update the Model section to remove Aviator 10R80, update the Parts list to add 3.3L to… |
| SSM 55098 | Service bulletin | Aug 18, 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… |
| TSB 26-2309 | Service bulletin | Jul 2, 2026 | This bulletin supersedes 26-2241. Reason For Update: update the parts list to correct the claim quantity of the part number JB3Z-4B496-B fro… |
| TSB 26-2281 | Service bulletin | Jun 12, 2026 | This bulletin supersedes 26-2091. Reason for update: To update the production cutoff date for Transit vehicles. Some of the vehicles listed… |
| TSB 26-2263 | Service bulletin | May 30, 2026 | This bulletin supersedes 26-2112. Reason For Update: add 2026 model year vehicles, update LV fluid XT-10-QLVC and CXT-10-LV6 description to… |
| TSB 26-2241 | Service bulletin | May 18, 2026 | This bulletin supersedes 25-2587. Reason For Update: update the Parts list to add the F-clutch friction plates HL3Z-7B164-D and the F-clutch… |
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 23N01 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 23N01 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 23N01 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.