Honda bulletin A24-085
What it saysThe MIL flashes and vehicle will not accelerate, low power. NHTSA’s full summary ↓
Honda filed this with NHTSA as a service bulletin dated Jul 20, 2024, received Jul 1, 2024, about the engine — 2 documents under this number. It names 28 model years (2016–2024). 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 communicationService Bulletin - The MIL flashes and vehicle will not accelerate, low power. After cycling the ignition, the symptom does not return with no stored DTCs. This issue is more common in regions with cold weather (specifically near or below freezing temperatures). Usually after a long drive (around 2 hours) and accelerating while cornering. Moisture accumulation in the intake manifold during long drives gets drawn into the combustion chamber while cornering, causing misfires.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| A24-085 | Service bulletin | Jul 20, 2024 | 11005272 | PDF, 329 KB |
| A24-085 | Service bulletin | Jun 19, 2024 | 11002716 | PDF, 327 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 06170-5MR-305 | — | 1 | |
| 37835-PGK-A01 | O-RING (Map Sensor) | 2 | eBay Motors → |
| 17102-RLV-A01 | GASKET, THROTTLE BODY | 1 | eBay Motors → |
| 18716-RB0-G01 | GASKET A, EGR PIPE | 1 | eBay Motors → |
| 17103-RLV-A01 | SEAL, EGR | 2 | eBay Motors → |
| 17101-RLV-A01 | GASKET, IN. MANIFOLD | 6 | eBay Motors → |
| 06170-RLV-305 | — | 1 | |
| 17160-5MR-A00 | — | — | |
| 17160-RLV-A00 | — | — |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 1111C0 | Replace the intake manifold and PCV hose | 0.7 hrs |
| A24085A | 17160-5MR-A00 1111C0D DTC Check-Add | 0.1 hrs |
| A24085B | 17160-5MR-A00 1111C0D DTC Check-Add | 0.1 hrs |
| A24085C | 17160-RLV-A00 1111C0D DTC Check-Add | 0.1 hrs |
Read by machine from the document NHTSA serves (4 pages), read Oct 4, 2026. A part number is shown only where it matches Honda’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.
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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 28 model years this bulletin names have filed 10,185 complaints with NHTSA since 2015. 2,950 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 Honda Pilot, the 235 owners who gave an odometer reading for Engine reported it at a median of 72,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
Engine fails to restart after Idle Stop engaged. Engine stops normally when brake pedal is pressed and vehicle comes to full stop. Brake pedal is then released to restart engine but the engine does not start. Dashboard says "Shift to Park". The transmission is shifted to Park and then Start button is pushed to restart engine.
2020 Honda Ridgeline · Engine · filed with NHTSA Oct 12, 2022 · ODI 11488999
After approximately 2 unbroken hours of driving North on I-35 from Minneapolis on January 24th, 2022, I exited the freeway at exit 214 near Moose Lake. I came to a stop at the top of the ramp (stop sign) to allow cross traffic to clear and then proceeded to accelerate while turning left to cross the bridge over the freeway.
2021 Honda Ridgeline · Engine · filed with NHTSA Apr 4, 2022 · ODI 11459570
Car has under 7000 miles. Engine struggles with power in lower gears. There is also a jump when shifting from reverse to forward. The jump feel like a transmission gear transfer issue. Today as an example, when departing from a traffic light, I had to fully compress the gas pedal to get the engine to respond.
2019 Honda Odyssey · Engine · filed with NHTSA Jun 19, 2019 · ODI 11221239
In depth: 2024 Honda Odyssey engine problems → · 2020 Honda Odyssey engine problems → · 2019 Honda Odyssey engine problems → · 2018 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 group37 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… |
| ATI&05122026901 | Other | May 13, 2026 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2025 Pilots with customer complaint of Check Engine Light… |
| ATI&04292026901 | Other | Apr 29, 2026 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2024-2026 Odysseys & Ridgelines and 2024-2025 Passports with… |
| 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… |
| 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… |
| 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… |
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 A24-085 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 A24-085 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 A24-085 cover?
The manufacturer filed it against 28 model years: 2024 Honda Odyssey, 2023 Honda Odyssey, 2022 Honda Odyssey, 2021 Honda Odyssey, 2020 Honda Odyssey, 2019 Honda Odyssey and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.