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Diagnostic trouble code

B101D

2 owner reports and 470 manufacturer filings across 177 model years from Buick, Cadillac, Chevrolet, GMC.

BodyManufacturer-specific470 manufacturer filings2 owner reports

Where B101D shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2016 Cadillac EscaladeElectrical System8
2016 Chevrolet SparkElectrical System8
2016 GMC YukonElectrical System8
2017 Chevrolet SparkElectrical System6
2016 Chevrolet VoltElectrical System51
2017 GMC YukonElectrical System6
2016 Buick EnclaveElectrical System5
2016 Buick LaCrosseElectrical System5
2016 Buick RegalElectrical System5
2016 Buick VeranoElectrical System5
2016 Cadillac ATSElectrical System5
2016 Cadillac CTSElectrical System5
2016 Cadillac ELRElectrical System5
2016 Cadillac SRXElectrical System5
2016 Cadillac XTSElectrical System5
2016 Chevrolet CruzeElectrical System5
2016 Chevrolet EquinoxElectrical System5
2016 Chevrolet ExpressElectrical System5
2016 Chevrolet ImpalaElectrical System5
2016 Chevrolet MalibuElectrical System5
2016 Chevrolet SSElectrical System5
2016 Chevrolet TraverseElectrical System5
2016 GMC AcadiaElectrical System5
2016 GMC TerrainElectrical System5
2016 Buick CascadaElectrical System4
2016 Buick EncoreElectrical System4
2016 Buick EnvisionElectrical System4
2016 Cadillac CT6Electrical System4
2016 Chevrolet CamaroElectrical System4
2016 Chevrolet City Express Cargo VanElectrical System4
2016 Chevrolet ColoradoElectrical System4
2016 Chevrolet CorvetteElectrical System4
2016 Chevrolet Silverado 2500HDElectrical System4
2016 Chevrolet SonicElectrical System4
2016 Chevrolet SuburbanElectrical System4
2016 Chevrolet TahoeElectrical System4
2016 Chevrolet TraxElectrical System4
2016 GMC CanyonElectrical System4
2016 GMC SavanaElectrical System4
2016 GMC SierraElectrical System4
2016 GMC Sierra 2500HDElectrical System4
2022 GMC TerrainElectrical 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
2017 Cadillac ATSElectrical System3
2017 Cadillac CT6Electrical System3
2017 Cadillac CTSElectrical System3
2017 Cadillac XT5Electrical System3
2017 Cadillac XTSElectrical System3
2019 Chevrolet BlazerElectrical System3
2017 Chevrolet Bolt EVElectrical System3
2017 Chevrolet CamaroElectrical System3
2017 Chevrolet ColoradoElectrical System3
2017 Chevrolet CorvetteElectrical System3
2017 Chevrolet CruzeElectrical System3

Showing the 60 model years where B101D appears most; it is on file for 177 in total.

A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.

What it gets filed under

Electrical System 319Equipment 78Back Over Prevention 55Air Bags 18Unspecified 1
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What owners said

Source: NHTSA complaint database

Owners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.

B101D p1eoo P1EAC poafa B3111 U3001 U2401 U2603 U2604 U2605 U2606 U2617 U2618 U2619 U2620 U2621 U2622 U2623 U2624 P1FD1 P1FD2 P1FD3 P1FD4
2016 Chevrolet VoltMar 20, 2026NHTSA owner report
found code B101D for internal failure and not responding to any programming or commands
2019 GMC AcadiaFeb 12, 2024NHTSA owner report

Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names B101D. Quoting the document number at a service desk is often the fastest route to a diagnosis someone 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. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.

Common questions about B101D

Source: NHTSA files and the OBD-II standard

Why does this page not define B101D?

Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.

Can I keep driving with B101D stored?

Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. The safe read of this page is the mileage and the components, not permission.

Does a code mean the car is recalled?

No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.

Why do the counts here differ from other sites?

Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.

Will clearing the code fix it?

Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.