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Diagnostic trouble code · Buick

B101D on Buick vehicles

B101D is named on 28 Buick model years (2016–2023): 76 manufacturer filings and 0 owner reports in NHTSA’s files, across Enclave, LaCrosse, Regal, Verano, Cascada and 2 more.

Body 28 model years 76 manufacturer filings

Which Buick model years name B101D

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2016 Buick EnclaveElectrical System5—
2016 Buick LaCrosseElectrical System5—
2016 Buick RegalElectrical System5—
2016 Buick VeranoElectrical System5—
2016 Buick CascadaElectrical System4—
2016 Buick EncoreElectrical System4—
2016 Buick EnvisionElectrical System4—
2017 Buick CascadaElectrical System3—
2017 Buick EnclaveElectrical System3—
2017 Buick EncoreElectrical System3—
2017 Buick EnvisionElectrical System3—
2017 Buick LaCrosseElectrical System3—
2017 Buick RegalElectrical System3—
2017 Buick VeranoElectrical System3—
2023 Buick EnclaveEquipment2—
2023 Buick EncoreEquipment2—
2022 Buick EnclaveElectrical System2—
2022 Buick EncoreEquipment2—
2021 Buick EnclaveEquipment2—
2021 Buick EncoreBack Over Prevention2—
2020 Buick EnclaveBack Over Prevention2—
2020 Buick EncoreBack Over Prevention2—
2019 Buick LaCrosseBack Over Prevention2—
2018 Buick CascadaElectrical System1—
2018 Buick EncoreElectrical System1—
2018 Buick EnvisionElectrical System1—
2018 Buick LaCrosseElectrical System1—
2018 Buick RegalElectrical System1—

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.

Electrical System 51 Equipment 13 Back Over Prevention 8 Air Bags 4
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Buick filings that name B101D

Source: NHTSA manufacturer communications

Bulletins and campaigns Buick filed with NHTSA whose summary names B101D. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What B101D means

Source: SAE J2012 / OBD-II

B101D 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.

From here

Common questions

Source: NHTSA files and the OBD-II standard

Is B101D a known problem on Buick vehicles?

It is a documented one: NHTSA's files hold 76 manufacturer filings and 0 owner reports naming B101D on 28 Buick model years (2016–2023). 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 B101D appear on most?

2016 Enclave (5 documents), 2016 LaCrosse (5 documents), 2016 Regal (5 documents).

Does B101D 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.