Honda bulletin ATI&05122026901
What it saysDealer Message - American Honda Motor Co., Inc. NHTSA’s full summary ↓
Honda filed this with NHTSA as a manufacturer communication dated May 13, 2026, received May 20, 2026, about the engine. It names 1 model year (2025). 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 2025 Pilots with customer complaint of Check Engine Light (CEL) on with DTC P0420 [Catalyst System Efficiency Below Threshold (Bank 1)] and/or P0430 [Catalyst System Efficiency Below Threshold (Bank 2]] stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle.
Trouble codes it names: P0420 P0430
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| ATI&05122026901 | Other | May 13, 2026 | 11032795 | PDF, 50 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 1 model year this bulletin names have filed 217 complaints with NHTSA since 2015. 33 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.
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 group23 other manufacturer communications filed against the Honda Pilot 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&04272026904 | Other | Apr 27, 2026 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2025 Pilots with customer complaint of Check Engine Light… |
| ATI&04132026905 | Other | Apr 13, 2026 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2025 Pilots with customer complaint of Check Engine Light… |
| ATI&01302026904 | Other | Jan 31, 2026 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2025 Pilots with customer complaint of Check Engine Light… |
| ATI&01142026905 | Other | Jan 14, 2026 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2025 Pilots with customer complaint of Check Engine Light… |
| ATI&10232025903 | Other | Oct 23, 2025 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Pilots with a customer complaint of a no auto re-st… |
| ATI&10172025903 | Other | Oct 17, 2025 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Pilots with a customer complaint of a no auto re-st… |
| A25-006 | Service bulletin | Jul 22, 2025 | "Service Bulletin - Burning oil smell from under hood and/or MIL comes on with DTC P2096 and/or P2270 due to possible porosity in the cylind… |
| ATI&07072025901 | Other | Jul 7, 2025 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Pilots with a customer complaint of a no auto re-st… |
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&05122026901 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&05122026901 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&05122026901 cover?
The manufacturer filed it against 1 model year: 2025 Honda Pilot. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.