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Diagnostic trouble code · Lexus

B15FE on Lexus vehicles

B15FE is named on 17 Lexus model years (2020–2022): 40 manufacturer filings and 0 owner reports in NHTSA’s files, across ES, IS, RC, NX, RX and 1 more.

Body 17 model years 40 manufacturer filings

Which Lexus model years name B15FE

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2022 Lexus ESEquipment3—
2022 Lexus ISEquipment3—
2022 Lexus RCEquipment3—
2021 Lexus ESEquipment3—
2021 Lexus RCEquipment3—
2020 Lexus RCEquipment3—
2022 Lexus RXEquipment2—
2022 Lexus UXEquipment2—
2021 Lexus ISEquipment2—
2021 Lexus NXEquipment2—
2021 Lexus RXEquipment2—
2021 Lexus UXEquipment2—
2020 Lexus ESEquipment2—
2020 Lexus ISEquipment2—
2020 Lexus NXEquipment2—
2020 Lexus RXEquipment2—
2020 Lexus UXEquipment2—

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.

Equipment 40
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Lexus filings that name B15FE

Source: NHTSA manufacturer communications

Bulletins and campaigns Lexus filed with NHTSA whose summary names B15FE. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What B15FE means

Source: SAE J2012 / OBD-II

B15FE 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 Lexus 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 B15FE a known problem on Lexus vehicles?

It is a documented one: NHTSA's files hold 40 manufacturer filings and 0 owner reports naming B15FE on 17 Lexus model years (2020–2022). 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 Lexus models does B15FE appear on most?

2022 ES (3 documents), 2021 ES (3 documents), 2022 IS (3 documents).

Does B15FE on a Lexus 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.