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Diagnostic trouble code · Ford

B115E on Ford vehicles

B115E is named on 11 Ford model years (2016–2025): 26 manufacturer filings and 0 owner reports in NHTSA’s files, across F-150, Mustang, Mustang Mach-E, Edge, Transit.

Body 11 model years 26 manufacturer filings

Which Ford model years name B115E

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2021 Ford F-150Electrical System7—
2023 Ford F-150Not specified4—
2021 Ford Mustang Mach-EBack Over Prevention3—
2016 Ford MustangEquipment3—
2022 Ford Mustang Mach-EBack Over Prevention2—
2017 Ford MustangElectrical System2—
2025 Ford TransitBack Over Prevention1—
2024 Ford TransitNot specified1—
2023 Ford Mustang Mach-EBack Over Prevention1—
2022 Ford EdgeElectrical System1—
2021 Ford EdgeElectrical 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 10 Back Over Prevention 9 Not specified 5 Equipment 2
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Ford filings that name B115E

Source: NHTSA manufacturer communications

Bulletins and campaigns Ford filed with NHTSA whose summary names B115E. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What B115E means

Source: SAE J2012 / OBD-II

B115E 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 Ford 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 B115E a known problem on Ford vehicles?

It is a documented one: NHTSA's files hold 26 manufacturer filings and 0 owner reports naming B115E on 11 Ford model years (2016–2025). 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 Ford models does B115E appear on most?

2021 F-150 (7 documents), 2023 F-150 (4 documents), 2016 Mustang (3 documents).

Does B115E on a Ford 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.