Honda bulletin A18-090
Honda filed this with NHTSA as a service bulletin dated Nov 14, 2023, received Oct 15, 2018, about the electrical system — 3 documents under this number. It names 1 model year (2018). 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 - There is a software problem in the PCM, which may cause the MIL to come on with DTC P26A3 (electric water valve malfunction), DTC P100C (electric VTC motor speed signal circuit malfunction) and/or P0010 (variable valve timing control [VTC] malfunction). There are up to three updates that must be performed on applicable vehicles.
Documents filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| A18-090 | Service bulletin | Nov 14, 2023 | 10245549 |
| A18-090 | Service bulletin | Oct 17, 2019 | 10166784 |
| A18-090 | Service bulletin | Oct 6, 2018 | 10145430 |
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 A18-090 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 A18-090 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 A18-090 cover?
The manufacturer filed it against 1 model year: 2018 Honda Clarity. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.