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Federal filingsHome›Trouble codes› B15DB
Diagnostic trouble code

B15DB

0 owner reports and 48 manufacturer filings across 17 model years from Toyota.

Body Manufacturer-specific 48 manufacturer filings

Where B15DB shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reportsParts
2020 Toyota HighlanderEquipment6—
2020 Toyota RAV4Equipment6—
2021 Toyota HighlanderEquipment5—
2021 Toyota RAV4Equipment5—
2020 Toyota TundraElectrical System5—Battery →
2021 Toyota TundraEquipment3—
2022 Toyota HighlanderEquipment2—
2021 Toyota PriusEquipment2—
2021 Toyota Prius PrimeEquipment2—
2022 Toyota RAV4Equipment2—
2021 Toyota RAV4 PrimeEquipment2—
2021 Toyota SiennaEquipment2—
2021 Toyota VenzaEquipment2—
2022 Toyota PriusEquipment1—
2022 Toyota Prius PrimeEquipment1—
2022 Toyota SiennaEquipment1—
2022 Toyota VenzaEquipment1—

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.

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B15DB by make

The same record, one make at a time: the model years, bulletins and owner reports that name B15DB on that maker’s vehicles.

Toyota 17

What it gets filed under

Equipment 38 Back Over Prevention 4 Electrical System 4 Seat Belts 2

48 manufacturer filings name B15DB. Start with what the maker wrote down.

A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.

Photo: Compagnons / Unsplash

Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names B15DB.

What B15DB means

Source: SAE J2012 / OBD-II

B15DB 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.

From here

Common questions about B15DB

Source: NHTSA files and the OBD-II standard

Why does this page not define B15DB?

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 B15DB stored?

Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. 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.