B172E on Buick vehicles
B172E is named on 7 Buick model years (2016–2019): 19 manufacturer filings and 0 owner reports in NHTSA’s files, across LaCrosse, Enclave, Envision.
Which Buick model years name B172E
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2018 Buick LaCrosse | Electrical System | 4 | — |
| 2017 Buick LaCrosse | Electrical System | 4 | — |
| 2018 Buick Enclave | Electrical System | 3 | — |
| 2018 Buick Envision | Electrical System | 3 | — |
| 2017 Buick Envision | Electrical System | 3 | — |
| 2019 Buick Envision | Electrical System | 1 | — |
| 2016 Buick Envision | Seats | 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 B172E
Source: NHTSA manufacturer communicationsBulletins and campaigns Buick filed with NHTSA whose summary names B172E. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIT5590 Service bulletin2017-10-12 · Electrical System — Software
- This Preliminary information communicates to the technician, that they may be working on a concern of a Service Driver Assist System Message with B172E stored in history Do not replace any parts. Engineering is aware of the issue and a new control module is in development and will be available Q1 2019.
- PIT5590A Service bulletin2017-11-17 · Equipment — Electrical
- This Preliminary information communicates to the technician, that they may be working on a concern of a Service Driver Assist System Message with B172E stored in history Do not replace any parts. Engineering is aware of the issue and a new control module is in development and will be available Q1 2018.
- PIT5590B Service bulletin2018-07-03 · Electrical System — Software
- This Preliminary information communicates to the technician, that they may be working on a concern of a Service Driver Assist System Message with B172E stored in history Do not replace any parts. Engineering is aware of the issue and a new control module is in development and will be available Q1 2018.
- 18NA086 Service bulletin2019-02-05 · Lane Departure
- This technical bulletin provides a procedure to replace the Front Seat Lane Departure Warning Actuator if the B172E is set in the seat control module.
- 20NA003 Service bulletin2020-02-03 · Seats
- This technical bulletin provides repair information to correct a customer concern of the Service Driver Assist Message Illuminated, Front Seat Lane Departure Warning Actuator Inoperative, DTC B172E Set.
What B172E means
Source: SAE J2012 / OBD-IIB172E is a manufacturer-specific code: the second character is a 1, 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 B172E a known problem on Buick vehicles?
It is a documented one: NHTSA's files hold 19 manufacturer filings and 0 owner reports naming B172E on 7 Buick model years (2016–2019). 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 B172E appear on most?
2018 LaCrosse (4 documents), 2017 LaCrosse (4 documents), 2018 Enclave (3 documents).
Does B172E 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.