Honda bulletin ATI&04292026901
What it saysDealer Message - American Honda Motor Co., Inc. NHTSA’s full summary ↓
Honda filed this with NHTSA as a manufacturer communication dated Apr 29, 2026, received Apr 30, 2026, about the engine. It names 5 model years (2024–2026). A manufacturer communication 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 communicationDealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2026 Odysseys & Ridgelines and 2024-2025 Passports with a customer complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
Trouble codes it names: P0441
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| ATI&04292026901 | Other | Apr 29, 2026 | 11031751 | PDF, 53 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 5 model years this bulletin names have filed 821 complaints with NHTSA since 2015. 382 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.
While driving my 2026 Honda Odyssey, I stopped at a red light and the engine shut off through the Auto Idle Stop system. I pressed the Auto Idle Stop OFF button because I wanted the engine running again before proceeding. Instead of restarting the engine, the vehicle completely shut down and became inoperable in traffic.
2026 Honda Odyssey · Engine · filed with NHTSA Sep 10, 2026 · ODI 11763518
Three times now since buying my van about 6 months ago brand new, I come to a stop light, the engine turns off, but then it won't come back on when the light turns green. I have had to put my hazards on while I frantically push the start button multiple times. Eventually it will start up but takes 1-2 minutes.
2025 Honda Odyssey · Engine · filed with NHTSA Oct 6, 2025 · ODI 11691626
The contact owns a 2025 Honda Ridgeline. The contact stated that the engine was consuming an excessive amount of engine oil. No warning light was illuminated. The vehicle was taken to a local dealer, where it was diagnosed however, the dealer found no failure. The manufacturer was made aware of the failure.
2025 Honda Ridgeline · Engine · filed with NHTSA Sep 8, 2025 · ODI 11685615
In depth: 2025 Honda Odyssey engine problems → · 2024 Honda Odyssey engine 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 engine
Source: same model, same component group24 other manufacturer communications filed against these Honda models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Honda list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| ATI&05122026902 | Other | May 13, 2026 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2026 Odysseys & Ridgelines and 2024-2025 Passports with… |
| A26-001 | Service bulletin | Feb 1, 2026 | Service Bulletin - The piston ring function deteriorates due to ring low wear toughness and sticking from sludge. Oil adheres to the spark p… |
| A25-061 | Service bulletin | Aug 29, 2025 | Service Bulletin - The piston ring function deteriorates due to ring wear and sticking from sludge. Oil from the crankcase adheres to the sp… |
| ATI&07312025905 | Other | Aug 1, 2025 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Odysseys, Passports, and Ridgelines with a customer… |
| ONL6Z6072025 | Other | Jul 29, 2025 | Owner Notification Letter - the piston ring function can deteriorate due to ring low wear toughness and sticking from sludge. Oil adheres to… |
| ATI&07152025901 | Other | Jul 15, 2025 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Odysseys, Passports, and Ridgelines with a customer… |
| A23-009 | Service bulletin | Jul 7, 2025 | Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due… |
| AEBM06172025901 | Other | Jun 17, 2025 | Dealer Message - Piston ring effectiveness may be reduced due to excessive wear and oil sludge build-up, which can cause oil to adhere 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 Honda, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Honda ATI&04292026901 a recall?
No. A manufacturer communication 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 ATI&04292026901 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. Every Honda warranty extension on file lists the ones Honda has filed.
Which vehicles does ATI&04292026901 cover?
The manufacturer filed it against 5 model years: 2026 Honda Odyssey, 2025 Honda Odyssey, 2024 Honda Odyssey, 2025 Honda Ridgeline, 2024 Honda Ridgeline. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.