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Diagnostic trouble code · Chevrolet

B3928 on Chevrolet vehicles

B3928 is named on 42 Chevrolet model years (2018–2025): 89 manufacturer filings and 0 owner reports in NHTSA’s files, across Equinox, Malibu, Blazer, Traverse, Camaro and 4 more.

Body 42 model years 89 manufacturer filings

Which Chevrolet model years name B3928

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2023 Chevrolet EquinoxElectrical System4—
2023 Chevrolet MalibuElectrical System4—
2022 Chevrolet EquinoxEquipment4—
2022 Chevrolet MalibuElectrical System4—
2021 Chevrolet EquinoxElectrical System4—
2021 Chevrolet MalibuElectrical System4—
2020 Chevrolet EquinoxEquipment4—
2020 Chevrolet MalibuElectrical System4—
2019 Chevrolet EquinoxElectrical System4—
2019 Chevrolet MalibuEquipment4—
2018 Chevrolet EquinoxElectrical System4—
2024 Chevrolet BlazerElectrical System2—
2024 Chevrolet MalibuElectrical System2—
2024 Chevrolet TraverseEngine2—
2023 Chevrolet BlazerElectrical System2—
2023 Chevrolet TraverseEngine2—
2022 Chevrolet BlazerElectrical System2—
2022 Chevrolet TraverseEngine2—
2021 Chevrolet BlazerElectrical System2—
2021 Chevrolet TraverseEngine2—
2020 Chevrolet BlazerElectrical System2—
2020 Chevrolet TraverseEngine2—
2019 Chevrolet BlazerElectrical System2—
2019 Chevrolet TraverseEngine2—
2018 Chevrolet TraverseEngine2—
2025 Chevrolet BlazerElectrical System1—
2025 Chevrolet MalibuElectrical System1—
2025 Chevrolet TrailblazerElectrical System1—
2024 Chevrolet CamaroElectrical System1—
2024 Chevrolet TrailblazerElectrical System1—
2023 Chevrolet CamaroElectrical System1—
2023 Chevrolet TrailblazerElectrical System1—
2022 Chevrolet CamaroElectrical System1—
2022 Chevrolet ColoradoElectrical System1—
2022 Chevrolet TrailblazerElectrical System1—
2021 Chevrolet ColoradoElectrical System1—
2020 Chevrolet CamaroElectrical System1—
2020 Chevrolet ColoradoElectrical System1—
2019 Chevrolet CamaroElectrical System1—
2019 Chevrolet ColoradoElectrical 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 69 Equipment 11 Engine 9
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Chevrolet filings that name B3928

Source: NHTSA manufacturer communications

Bulletins and campaigns Chevrolet filed with NHTSA whose summary names B3928. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What B3928 means

Source: SAE J2012 / OBD-II

B3928 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 Chevrolet 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 B3928 a known problem on Chevrolet vehicles?

It is a documented one: NHTSA's files hold 89 manufacturer filings and 0 owner reports naming B3928 on 42 Chevrolet model years (2018–2025). 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 Chevrolet models does B3928 appear on most?

2023 Equinox (4 documents), 2022 Equinox (4 documents), 2021 Equinox (4 documents).

Does B3928 on a Chevrolet 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.