B3935 on Buick vehicles
B3935 is named on 51 Buick model years (2016–2026): 286 manufacturer filings and 0 owner reports in NHTSA’s files, across Cascada, Enclave, Encore, Envision, LaCrosse and 3 more.
Which Buick model years name B3935
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2018 Buick Encore | Electrical System | 10 | — |
| 2018 Buick Envision | Electrical System | 10 | — |
| 2017 Buick Cascada | Electrical System | 10 | — |
| 2017 Buick Enclave | Electrical System | 10 | — |
| 2017 Buick Encore | Electrical System | 10 | — |
| 2017 Buick Envision | Electrical System | 10 | — |
| 2017 Buick LaCrosse | Electrical System | 10 | — |
| 2017 Buick Regal | Electrical System | 10 | — |
| 2017 Buick Verano | Electrical System | 10 | — |
| 2016 Buick Cascada | Electrical System | 10 | — |
| 2016 Buick Enclave | Electrical System | 10 | — |
| 2016 Buick Encore | Electrical System | 10 | — |
| 2016 Buick Envision | Electrical System | 10 | — |
| 2016 Buick LaCrosse | Electrical System | 10 | — |
| 2016 Buick Regal | Electrical System | 10 | — |
| 2016 Buick Verano | Electrical System | 10 | — |
| 2018 Buick Cascada | Electrical System | 9 | — |
| 2018 Buick Enclave | Electrical System | 9 | — |
| 2018 Buick LaCrosse | Electrical System | 9 | — |
| 2018 Buick Regal | Not specified | 9 | — |
| 2022 Buick Encore | Not specified | 5 | — |
| 2021 Buick Encore | Not specified | 5 | — |
| 2020 Buick Encore | Electrical System | 5 | — |
| 2020 Buick Regal | Power Train | 5 | — |
| 2019 Buick Cascada | Power Train | 5 | — |
| 2019 Buick Enclave | Engine | 5 | — |
| 2019 Buick Encore | Engine | 5 | — |
| 2019 Buick Envision | Electrical System | 5 | — |
| 2019 Buick LaCrosse | Not specified | 5 | — |
| 2019 Buick Regal | Power Train | 5 | — |
| 2021 Buick Enclave | Not specified | 4 | — |
| 2021 Buick Envision | Not specified | 4 | — |
| 2020 Buick Enclave | Air Bags | 4 | — |
| 2020 Buick Envision | Power Train | 4 | — |
| 2022 Buick Enclave | Not specified | 3 | — |
| 2022 Buick Envision | Not specified | 3 | — |
| 2025 Buick Encore | Not specified | 2 | — |
| 2024 Buick Encore | Not specified | 2 | — |
| 2023 Buick Encore | Not specified | 2 | — |
| 2026 Buick Enclave | Not specified | 1 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
Buick filings that name B3935
Source: NHTSA manufacturer communicationsBulletins and campaigns Buick filed with NHTSA whose summary names B3935. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIC5650C Service bulletin2017-10-13 · Electrical System
- This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radi
- PIC5650D Service bulletin2017-12-19 · Electrical System
- This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radi
- PIC5650F Service bulletin2018-12-17 · Engine And Engine Cooling
- This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radi
- PIC5650G Service bulletin2020-04-27 · Engine And Engine Cooling
- This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radi
- PIC5650H Service bulletin2020-07-24 · Electrical System
- This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radi
- PIC5650J Service bulletin2021-07-21 · Power Train
- This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radi
- PIC5650K Service bulletin2023-05-15 · Power Train
- This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radi
- PIC5650M Service bulletin2025-08-07 · Unknown Or Other
- This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, B3935, C0750, C0755, C0760, C0765, and/or C0775.
- PIC5650L Service bulletin2024-09-06 · Electrical System
- This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radi
What B3935 means
Source: SAE J2012 / OBD-IIB3935 is a manufacturer-specific code: the second character is a 3, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
A stored code names the test that failed, never the part that caused it. The record above is what Buick and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs B3935 a known problem on Buick vehicles?
It is a documented one: NHTSA's files hold 286 manufacturer filings and 0 owner reports naming B3935 on 51 Buick model years (2016–2026). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Buick models does B3935 appear on most?
2017 Cascada (10 documents), 2016 Cascada (10 documents), 2017 Enclave (10 documents).
Does B3935 on a Buick mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.