Volvo bulletin 37148
What it saysThis is a Technical Journal: CEL with DTC ECM P001100, P001200, P001400, P001500. NHTSA’s full summary ↓
Volvo filed this with NHTSA as a service bulletin dated Oct 10, 2025, received Jul 9, 2025, about the engine — 5 documents under this number. It names 40 model years (2021–2026). 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 is a Technical Journal: CEL with DTC ECM P001100, P001200, P001400, P001500. For MY 23-26 vehicles with engine code L1, an improved software is released in version 3.5.14 (and newer). Perform a Total Upgrade according to TJ 31543 before performing additional VIDA symptom-based fault tracing. •Software for remaining models will be released later in calendar year 2025
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 37148 | Service bulletin | Oct 10, 2025 | 11025563 | |
| 37148 | Service bulletin | Jul 24, 2025 | 11021935 | |
| 37148 | Service bulletin | Jun 19, 2025 | 11020558 | |
| 37148 | Service bulletin | May 17, 2025 | 11020534 | |
| 37148 | Service bulletin | May 1, 2025 | 11020523 |
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 40 model years this bulletin names have filed 679 complaints with NHTSA since 2015. 31 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 2026 Volvo XC90 PHEV. The contact stated that while driving at an undisclosed speed, there was an abnormal odor inside the vehicle. No warning lights were illuminated. The contact refused to drive the vehicle due to the abnormal odor. The vehicle was not diagnosed or repaired by an independent mechanic or dealer.
2026 Volvo XC90 · Engine · filed with NHTSA Aug 31, 2026 · ODI 11761067
What component or system failed or malfunctioned, and is it available for inspection upon request? The front warning collision comes on when a car is not even close. Engine, a part in the engine area has been replaced twice. Transmission, not shifting properly when 2/3. How was your safety or the safety of others put at risk?
2022 Volvo S60 · Engine · filed with NHTSA Mar 7, 2024 · ODI 11576108
The ERAD (Electric Rear Axle Drive) transmission on my 2021 XC90 T8 Recharge has suffered an internal failure at approximately 112,550 miles. The vehicle makes loud grinding and slamming noises from the rear drivetrain and locks up when attempting to drive, making the vehicle completely undrivable.
2021 Volvo XC90 · Engine · filed with NHTSA Feb 13, 2026 · ODI 11717923
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 group31 other manufacturer communications filed against these Volvo models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Volvo list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 37083.8.1 | Service bulletin | Sep 24, 2026 | This is a Technical Journal: Text plus 1 MP4 - Not possible to go to Drive mode after ERS start. Download software. Please follow the advice… |
| 37844.2.0 | Service bulletin | Sep 12, 2026 | This is a TJ - text, plus 1 attached PDF - and 2 .MOV files If a noise from the engine occurrs during idling, refer to the attached sound fi… |
| 37316.5.0 | Service bulletin | Sep 12, 2026 | This is a Technical Journal: DTC ECM-P06DE00 set, no symptoms. Do not replace any parts or perform additional fault tracing. This is a misde… |
| 37844.1.0 | Service bulletin | Jun 26, 2026 | This is a TJ - text, plus 1 attached PDF - and 2 .MOV files If a noise from the engine occurrs during idling, refer to the attached sound fi… |
| 35526.1.8 | Service bulletin | Apr 23, 2026 | This is a Technical Journal: Text plus 2 PDFs and 1 .PNG Oil Consumption test. Perform the test. Follow service procedure Description and S… |
| 36923.9.1 | Service bulletin | Apr 22, 2026 | This is a Technical Journal: Text document plus 1 PDF attachment Coolant Pump Dry Coolant Mix Residue. If the coolant pump has an active lea… |
| 37083.7.0 | Service bulletin | Apr 18, 2026 | This is a Technical Journal: Text plus 1 MP4 - Not possible to go to Drive mode after ERS start. Download software. Please follow the advice… |
| 37288.4.0 | Service bulletin | Feb 21, 2026 | This is a Technical Journal: MIL and DTCs ECM P012807/P01287A. In case of MIL and DTCs P012807 and P01287A set together, follow advice under… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Volvo, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Volvo 37148 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 37148 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 37148 cover?
The manufacturer filed it against 40 model years: 2025 Volvo S60, 2024 Volvo S60, 2023 Volvo S60, 2022 Volvo S60, 2021 Volvo S60, 2026 Volvo S90 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.