Subaru bulletin 18-243-26
What it saysThis bulletin announces the elimination of oil spacers from both left- and right side camshaft carriers on FB2.5 engines. NHTSA’s full summary ↓
Subaru filed this with NHTSA as a service bulletin dated Jun 11, 2026, received Jul 2, 2026, about the engine. It names 4 model years (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 communicationThis bulletin announces the elimination of oil spacers from both left- and right side camshaft carriers on FB2.5 engines.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 18-243-26 | Service bulletin | Jun 11, 2026 | 11034246 | PDF, 1,710 KB |
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 4 model years this bulletin names have filed 47 complaints with NHTSA since 2015.
On XXX while driving my brand-new 2026 Subaru Crosstrek with approximately 63 miles on the odometer, the vehicle suddenly lost acceleration. The AT Oil Temp warning flashed, followed by the Check Engine Light and multiple EyeSight and driver assistance warning lights.
2026 Subaru Crosstrek · Engine · filed with NHTSA Aug 5, 2026
At approximately 500 miles from delivery, the vehicle experienced a catastrophic mechanical failure caused by a malfunctioning PCV (positive crankcase ventilation) valve, which resulted in oil fumes being expelled through the exhaust system.
2026 Subaru Forester · Engine · filed with NHTSA Sep 25, 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 engine
Source: same model, same component group48 other manufacturer communications filed against these Subaru models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Subaru list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 02-196-26R | Service bulletin | Aug 20, 2026 | This service bulletin outlines the diagnostic and repair procedure for white smoke emitted from the exhaust after startup. This is an revise… |
| 07-231-26 | Service bulletin | Aug 5, 2026 | This bulletin announces the service procedure for battery replacement on 2025-2026MY Impreza and Crosstrek. |
| 02-193-24R | Service bulletin | Jun 30, 2026 | This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel inject… |
| 09-74-21R | Service bulletin | Jun 26, 2026 | This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel inject… |
| 02-196-26 | Service bulletin | Jun 23, 2026 | This bulletin outlines the diagnostic and repair procedure for white smoke emitted from the exhaust after startup. |
| 09-130-25R | Service bulletin | Jun 3, 2026 | This bulletin announces the design change made to the exhaust manifold flange nut material that has been changed from stainless steel to med… |
| 18-240-26 | Service bulletin | Jun 1, 2026 | "This bulletin provides a new diagnostic procedure for vehicles equipped with a Denso CP 1, 1.5 and 2.5 head units to provide an enhanced ve… |
| 18-230-26 | Service bulletin | May 1, 2026 | This bulletin announces the diagnostic procedures to be used when DTCs B1571(REFERENCE CODE INCOMPATIBILITY IMMOBILIZER CM TO ECM) and B1572… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Subaru, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Subaru 18-243-26 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 18-243-26 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 18-243-26 cover?
The manufacturer filed it against 4 model years: 2026 Subaru Crosstrek, 2026 Subaru Forester, 2026 Subaru Impreza, 2026 Subaru Outback. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.