Acura bulletin B23-035
Acura filed this with NHTSA as a service bulletin dated Jan 10, 2024, received Dec 23, 2023, about the engine and engine cooling — 2 documents under this number. It names 10 model years (2018–2024). 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.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationService Bulletin - The MIL comes on during vehicle operation due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 (Evaporative Emission (EVAP) System Purge Flow Malfunction).
Documents filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| B23-035 | Service bulletin | Jan 10, 2024 | 10248978 |
| B23-035 | Service bulletin | Dec 15, 2023 | 10247626 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. 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. Quote it 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.
Common questions
Source: NHTSA, 49 CFR 579.5Is Acura B23-035 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 B23-035 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 B23-035 cover?
The manufacturer filed it against 10 model years: 2024 Acura MDX, 2023 Acura MDX, 2022 Acura MDX, 2020 Acura MDX, 2019 Acura MDX, 2018 Acura MDX and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.