Toyota bulletin T-SB-0034-26 REV1
What it saysSome 2025 – 2026 model year Camry HV vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P0A1B94 (Drive Motor A Control Module Unexpected Operation) stored. NHTSA’s full summary ↓
Toyota filed this with NHTSA as a service bulletin dated Sep 16, 2026, received Oct 8, 2026, about the engine — 1 document under this number: T-SB-0034-26 Rev1. 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 communicationSome 2025 – 2026 model year Camry HV vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P0A1B94 (Drive Motor A Control Module Unexpected Operation) stored. The logic in the Motor Generator Control ECU has been modified to address this condition.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| T-SB-0034-26 Rev1 | Service bulletin | Sep 16, 2026 | 11038383 |
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 317 complaints with NHTSA since 2015.
The contact owns a 2026 Toyota Camry. The contact stated that while driving at an undisclosed speed, the vehicle independently accelerated and reversed which caused the vehicle to crash into a brick wall; the contact stated that while the brake pedal was depressed, the brakes failed to engage. No warning lights were illuminated.
2026 Toyota Camry · Engine · filed with NHTSA Apr 6, 2026 · ODI 11729389
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 group33 other manufacturer communications filed against the Toyota Camry under the same component group (engine), newest first. The eight newest are listed; the rest are on the Toyota list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| T-SB-0110-20 OBSOLETE | Service bulletin | Aug 20, 2026 | OBSOLETE NOTICE August 20, 2026: This bulletin is now obsolete. Please see T-SB-0051-26. |
| T-SB-0051-26 | Service bulletin | Aug 20, 2026 | This bulletin includes basic procedures for performing a rescue charge at battery on high voltage (HV) Ni-MH and Li-ion batteries. |
| 24TE04 | Warranty extension | Aug 11, 2026 | This Customer Support Program provides coverage as it applies to Flow Shut-off Valve Coolant Leak on Certain 2019-2021 Avalon & Avalon HV, 2… |
| T-SB-0034-26 | Service bulletin | Jun 30, 2026 | Some 2025 — 2026 model year Camry HV vehicles may exhibit a MIL on condition with DTC P0A1B94… |
| T-SB-0023-26 | Service bulletin | Apr 1, 2026 | Some customers may experience a rough running engine with a MIL ON P140018 DTC. Upon further inspection, a loose C90/C27 connector pin at th… |
| T-SB-0104-21 OBSOLETE | Service bulletin | Feb 27, 2026 | OBSOLETE NOTICE February 27, 2026: This bulletin is no longer applicable and is now obsolete. |
| T-SB-0119-15 REV2 | Service bulletin | Feb 13, 2026 | OBSOLETE NOTICE February 13, 2026: This bulletin is now obsolete. Please see T-SB-0009-26. |
| T-SB-0009-26 | Service bulletin | Feb 13, 2026 | This bulletin includes basic procedures for performing a rescue charge on Ni-MH high voltage (HV) batteries. This bulletin should be used in… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Toyota, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Toyota T-SB-0034-26 REV1 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 T-SB-0034-26 REV1 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 Toyota warranty extension on file lists the ones Toyota has filed.
Which vehicles does T-SB-0034-26 REV1 cover?
The manufacturer filed it against 2 model years: 2026 Toyota Camry, 2025 Toyota Camry. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.