Honda bulletin A26-026
What it saysThe current Power Control Unit (PCU) Radiator Guard does not provide adequate protection. NHTSA’s full summary ↓
Honda filed this with NHTSA as a service bulletin dated Apr 21, 2026, received Apr 14, 2026, about the power train — 3 documents under this number. It names 2 model years (2025–2026). 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 current Power Control Unit (PCU) Radiator Guard does not provide adequate protection. Roadway debris can cause damage to the PCU Radiator which may result in multiple warning lights, Malfunction Indicator Lights (MIL), and decreased hybrid system performance.
Trouble codes it names: P032F P0634 P0A3C P0A3E P0CF1 P0D32 P1D9A P1F3C all 8 read from the document itself; NHTSA’s summary names none
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| A26-026 | Service bulletin | Apr 21, 2026 | 11031758 | PDF, 800 KB |
| A26-026 | Service bulletin | Apr 21, 2026 | 11031500 | PDF, 800 KB |
| A26-026 | Service bulletin | Apr 4, 2026 | 11031285 | PDF, 800 KB |
What the document itself lists
The manufacturer titles it “Product Update: 2025-26 Civic Hybrid PCU Radiator Guard Inspection”.
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 1185C6 | Visually inspect PCU Radiator Guard – No further action | 0.2 hrs |
| 1181HT | Repair procedure A: Replace PCU Radiator Guard Only (includes inspection) | 0.6 hrs |
| 1181HU | Repair procedure B: Replace PCU Radiator and Radiator Guard (includes inspect &… | 1 hrs |
Read by machine from the document NHTSA serves (5 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 2 model years this bulletin names have filed 128 complaints with NHTSA since 2015. 5 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.
The contact owns a 2025 Honda Civic Type R. The contact stated that while driving approximately 70 MPH and slowing down for a red light, the vehicle failed to accelerate while the accelerator pedal was depressed.
2025 Honda Civic · Power Train · filed with NHTSA Jun 26, 2026
The air conditioning in the is not blowing enough air to cool the car down. It would take long to cooling
2026 Honda Civic · Engine · filed with NHTSA Apr 18, 2026
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 power train
Source: same model, same component group6 other manufacturer communications filed against the Honda Civic under the same component group (power train), newest first.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| ATI&04082026901 | Other | Apr 8, 2026 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 Civic LXs, Sports, EXs, EX-Ls or Tourings equipped… |
| AEBM04032026903 | Other | Apr 4, 2026 | Dealer Message - The current radiator guard does not provide adequate protection. Roadway debris can cause damage to the Power Control Unit… |
| ATI&03252026907 | Other | Mar 25, 2026 | Dealer Message - American American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 Civic LXs, Sports, EXs, EX-Ls or Tourings… |
| ATI&03032026906 | Other | Mar 3, 2026 | Dealer Message - American American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2023 Civic LXs, Sports, EXs, EX-Ls or Tourings… |
| ONL6GT022025 | Other | Feb 17, 2025 | Owner Notification Letter - Due to a manufacturing error, certain service part electric power steering (EPS) gearbox assemblies were not mad… |
| ATI&01312024903 | Service bulletin | Jan 31, 2024 | Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2024 Civic 1.5Ls with a dealer concern of an oil leak fr… |
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 A26-026 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 A26-026 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 A26-026 cover?
The manufacturer filed it against 2 model years: 2026 Honda Civic, 2025 Honda Civic. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.