Subaru bulletin 16-149-25
What it says"This bulletin announces availability of the new TR580 control valve and connector cover developed to address cases of the following DTCs detected by the Transmission Control Module (TCM): P2721: Pressure Control… NHTSA’s full summary ↓
Subaru filed this with NHTSA as a service bulletin dated Jan 13, 2025, received Feb 4, 2025, about the electrical system. It names 14 model years (2020–2023). 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.
Get the next Subaru bulletin for your model by email Weekly, only when something new is filed. Nothing else; one-click unsubscribe.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communication"This bulletin announces availability of the new TR580 control valve and connector cover developed to address cases of the following DTCs detected by the Transmission Control Module (TCM): • P2721: Pressure Control Solenoid “D” Control Circuit High • P2763: Torque Converter Clutch Pressure Control Solenoid Control Circuit High • P0974: Shift Solenoid “A” Control Circuit High • P0977: Shift Solenoid “”B”” Control Circuit High"
Trouble codes it names: P2721 P2763 P0974 P0977 2 of 4 read from the document itself
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 16-149-25 | Service bulletin | Jan 13, 2025 | 11013504 | PDF, 524 KB |
What the document itself lists
The manufacturer titles it “TR580 Control Valve & Connector Cover /”.
Parts the bulletin names
| Part number | Description | Qty | Find it |
|---|---|---|---|
| 29174AA010 | All COVER, CONNECTOR | 1 | eBay Motors → |
| 31825AA102 | All CONTROL VALVE KIT | 1 | eBay Motors → |
| 24031AA893 | Legacy, Outback, and Crosstrek HARNESS-TRANSMISSION | 1 | eBay Motors → |
| 24031AA991 | Forester Wilderness HARNESS-TRANSMISSION | 1 | eBay Motors → |
Read by machine from the document NHTSA serves (5 pages), read Sep 30, 2026. A part number is shown only where it matches Subaru’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.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
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.
Email me new Subaru bulletins for one of these models
A weekly email, sent only in a week when Subaru files something new with NHTSA for the model you pick — service bulletins, campaigns, warranty extensions, over-the-air notices, every model year. Nothing else is sent; one-click unsubscribe in every message. Separate from recall alerts.
What owners reported
Source: NHTSA complaint databaseOwners of the 14 model years this bulletin names have filed 2,382 complaints with NHTSA since 2015. 590 of them name Electrical System, Power Train — 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.
On the 2020 Subaru Outback, the 115 owners who gave an odometer reading for Electrical System reported it at a median of 5,000 miles. That figure is one model year’s, not the whole range this bulletin covers — medians from different model years are not averaged.
The contact owns a 2022 Subaru Crosstrek. The contact stated that the vehicle was difficult to start and was jumpstarted several times by a dealer’s mobile technician. The vehicle was taken to an unknown dealer, where it was determined that the battery was in good condition, and the failure could be related to the manual transmission.
2022 Subaru Crosstrek · Power Train · filed with NHTSA Jul 22, 2025 · ODI 11675423
My new 2022 Forester Wildness is equipped with an automate "Start and Stop" function which (while driving) shuts the engine off if the sits still too long in traffic or a stop light. While the car has a button to disable this function. You must press the button every time you start the car to disable the auto SS.
2022 Subaru Forester · Power Train · filed with NHTSA Sep 6, 2022 · ODI 11483112
Car intermittently will studder and not go into first gear or go into second gear dangerously having car bog down and almost stall and then it violently downshifts having car RMP Hague go very high then slip and have no power to wheels and then a few seconds later go into second gear violently taking off again.
2021 Subaru Legacy · Power Train · filed with NHTSA Nov 21, 2025 · ODI 11700919
In depth: 2022 Subaru Outback electrical problems → · 2021 Subaru Outback electrical problems → · 2020 Subaru Outback electrical problems → · 2020 Subaru Outback transmission and drivetrain problems →
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 electrical system
Source: same model, same component group125 other manufacturer communications filed against these Subaru models under the same component group (electrical system), newest first. The eight newest are listed; the rest are on the Subaru list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 18-244-26 | Service bulletin | Sep 18, 2026 | "This Bulletin announces additional troubleshooting steps for the following DTCs: DTC C1956: RH Actuator Circuit DTC C1957: LH Actuator Circ… |
| 15-333-25R | Service bulletin | Sep 14, 2026 | This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure… |
| 15-331-25R | Service bulletin | Sep 14, 2026 | This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concern… |
| 15-322-25R | Service bulletin | Sep 14, 2026 | In the interest of customer satisfaction, Subaru of America, Inc. (SOA) is extending the New Car Limited Warranty coverage for the CP1 & Gen… |
| 15-304-22R | Service bulletin | Sep 14, 2026 | This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concern… |
| 12-269-25R | Service bulletin | Sep 10, 2026 | This bulletin announces the service procedures to be followed when encountering instances of water intrusion from the sunroof area. This is… |
| 15-343-26 | Service bulletin | Sep 1, 2026 | "This bulletin announces a design change to the cord assembly that connects the Center Infotainment Display (CID) to the CCU, addressing rep… |
| 15-342-26 | Service bulletin | Aug 31, 2026 | This bulletin announces an inspection procedure for the Smart Rear View Mirror Assembly. |
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 16-149-25 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 16-149-25 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. Every Subaru warranty extension on file lists the ones Subaru has filed.
Which vehicles does 16-149-25 cover?
The manufacturer filed it against 14 model years: 2023 Subaru Crosstrek, 2022 Subaru Crosstrek, 2021 Subaru Crosstrek, 2020 Subaru Crosstrek, 2023 Subaru Forester, 2022 Subaru Forester and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.