Honda bulletin A21-047
Honda filed this with NHTSA as a service bulletin dated Feb 20, 2025, received May 5, 2021, about the power train — 6 documents under this number. It names 5 model years (2016–2020). 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 communication"Service Bulletin - Due to the possibility of early deterioration of the Continuous Variable Transmission (CVT) drive belt, American Honda is extending the warranty coverage on these CVT models to 7 years from the original date of purchase or 150,000 miles, whichever comes first. If the PCM software was previously updated in service bulletin 21-046, Product Update: 2016-20 HR-V Software Update and CVT Inspection, the warranty extension applies, since the CVT primary drive belt is now a OBD-monitored part due to the addition of DTC P271E."
Documents filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| A21-047 | Service bulletin | Feb 20, 2025 | 11015013 |
| A21-047 | Service bulletin | May 3, 2023 | 10236086 |
| A21-047 | Service bulletin | Dec 16, 2021 | 10205453 |
| A21-047 | Service bulletin | Aug 11, 2021 | 10200409 |
| A21-047 | Service bulletin | Jun 1, 2021 | 10196768 |
| A21-047 | Service bulletin | Apr 27, 2021 | 10191761 |
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 Honda A21-047 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 A21-047 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 A21-047 cover?
The manufacturer filed it against 5 model years: 2020 Honda HR-V, 2019 Honda HR-V, 2018 Honda HR-V, 2017 Honda HR-V, 2016 Honda HR-V. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.