Honda bulletin A25-006
What it says"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 cylinder head cover bolt hole may cause oil to weep out onto Bank 1 (Rear Cylinder… NHTSA’s full summary ↓
Honda filed this with NHTSA as a service bulletin dated Jul 22, 2025, received Aug 8, 2025, about the engine. It names 3 model years (2023–2025). 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 communication"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 cylinder head cover bolt hole may cause oil to weep out onto Bank 1 (Rear Cylinder Head) catalytic converter and oxygen sensor. Some cases will turn on the MIL, setting DTC P2096 and/or P2270."
Trouble codes it names: P2096 P2270
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| A25-006 | Service bulletin | Jul 22, 2025 | 11021747 | PDF, 5,237 KB |
What the document itself lists
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 90012-6FB-A00 | BOLT, FLANGE (SEAL) 6X50 | 2 | eBay Motors → |
| 06123-6FB-305 | GENERAL ASSY., RR. CYLINDER HEAD | 1 | eBay Motors → |
| 12261-6FB-A01 | GASKET, RR. CYLINDER HEAD | 1 | eBay Motors → |
| 12411-6FB-A01 | GASKET, CAM END COVER | 1 | eBay Motors → |
| 12512-6FB-A00 | — | 1 | |
| 15142-PE0-000 | O-RING | 2 | eBay Motors → |
| 15815-6S9-A01 | FILTER ASSY., SPOOL VALVE | 1 | eBay Motors → |
| 15855-6S9-A01 | FILTER ASSY., VTC | 1 | eBay Motors → |
| 16012-6FB-305 | — | 1 | |
| 16451-6B2-A01 | CLIP, INJECTOR (INJECTOR CLIP) | 3 | eBay Motors → |
| 16453-6FB-A00 | SEAL SET, INJECTOR | 1 | eBay Motors → |
| 17055-6S9-A01 | GASKET, IN. MANIFOLD (GASKET) | 2 | eBay Motors → |
| 17101-6FB-A01 | GASKET, IN. MANIFOLD | 6 | eBay Motors → |
| 18115-5G0-A01 | GASKET, EX. CHAMBER (NIPPON LEAKLESS) | 1 | eBay Motors → |
| 18212-SA7-003 | GASKET, EX. PIPE (NOK) | 2 | eBay Motors → |
| 18393-SDB-A00 | GASKET, PRE CHAMBER | 1 | eBay Motors → |
| 19412-P8A-A02 | GASKET, RR. WATER PASSAGE | 2 | eBay Motors → |
| 36542-6FB-A01 | SENSOR, AIR FUEL RATIO (DENSO) | 1 | eBay Motors → |
| 90005-5G0-A01 | BOLT-WASHER (12X188) | 2 | eBay Motors → |
| 90005-PAA-A01 | BOLT-WASHER (12X163) | 6 | eBay Motors → |
| 90006-6S9-A00 | WASHER, SPECIAL (8MM) | 1 | |
| 90164-TYA-A50 | BOLT, FLANGE (10X56) | 2 | eBay Motors → |
| 90169-TYA-A00 | BOLT, FLANGE (10X40) | 2 | eBay Motors → |
| 90171-TBA-A00 | BOLT, FLANGE (10X30) | 1 | eBay Motors → |
| 90212-RCA-A01 | NUT, SELF-LOCK (8MM) | 4 | eBay Motors → |
| 90212-SA5-003 | NUT, SELF-LOCK (10MM) | 9 | eBay Motors → |
| 91302-6S9-A11 | O-RING | 2 | eBay Motors → |
| 91311-5A2-A01 | O-RING | 1 | eBay Motors → |
| 91314-PH7-003 | O-RING | 1 | eBay Motors → |
| 91333-PNA-003 | O-RING | 2 | eBay Motors → |
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 1105E0 | Inspect cylinder head with borescope and oxygen sensor for oil leak | 0.7 hrs |
| A25006A | A Repair procedure A: one time use sealing bolts install | 0.4 hrs |
| A25006B | use sealing bolts C Repair procedure C: Replace the bank 1 O2 sensor | 0.1 hrs |
Read by machine from the document NHTSA serves (24 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 3 model years this bulletin names have filed 484 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.
Car wouldn't go more than 25-30 miles/hour and rpm was at 5-6, had to use blinkers on highway. Luckily there weren't any injuries, i was scared of the situation as I was travelling with my toddler and newborn. After reaching home, car wouldn't reverse. I had shutdown and started the car multiple times before i could reverse.
2023 Honda Pilot · Engine · filed with NHTSA Sep 27, 2023 · ODI 11546998
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&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&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… |
| 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 A25-006 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 A25-006 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 A25-006 cover?
The manufacturer filed it against 3 model years: 2025 Honda Pilot, 2024 Honda Pilot, 2023 Honda Pilot. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.