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HomeTrouble codesB115E
Diagnostic trouble code

B115E

0 owner reports and 48 manufacturer filings across 33 model years from Ford, Lincoln, Mazda.

BodyManufacturer-specific48 manufacturer filings

Where B115E shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2021 Ford F-150Electrical System7
2023 Ford F-150Unknown Or Other4
2016 Ford MustangEquipment3
2021 Ford Mustang Mach-EBack Over Prevention3
2017 Ford MustangElectrical System2
2022 Ford Mustang Mach-EBack Over Prevention2
2022 Ford EdgeElectrical System1
2021 Ford EdgeElectrical System1
2023 Ford Mustang Mach-EEquipment1
2025 Ford TransitBack Over Prevention1
2024 Ford TransitUnknown Or Other1
2023 Lincoln CorsairBack Over Prevention1
2021 Mazda CX-3Equipment Adaptive/Mobility1
2020 Mazda CX-3Equipment Adaptive/Mobility1
2019 Mazda CX-3Equipment Adaptive/Mobility1
2018 Mazda CX-3Forward Collision Avoidance1
2021 Mazda CX-5Forward Collision Avoidance1
2020 Mazda CX-5Forward Collision Avoidance1
2017 Mazda CX-5Forward Collision Avoidance1
2021 Mazda CX-9Forward Collision Avoidance1
2020 Mazda CX-9Equipment Adaptive/Mobility1
2019 Mazda CX-9Forward Collision Avoidance1
2018 Mazda CX-9Equipment Adaptive/Mobility1
2021 Mazda MX-5Equipment Adaptive/Mobility1
2020 Mazda MX-5Equipment Adaptive/Mobility1
2019 Mazda MX-5Equipment Adaptive/Mobility1
2018 Mazda Mazda3Equipment Adaptive/Mobility1
2017 Mazda Mazda3Equipment Adaptive/Mobility1
2021 Mazda Mazda6Equipment Adaptive/Mobility1
2020 Mazda Mazda6Equipment Adaptive/Mobility1
2019 Mazda Mazda6Equipment Adaptive/Mobility1
2018 Mazda Mazda6Equipment Adaptive/Mobility1
2017 Mazda Mazda6Equipment Adaptive/Mobility1

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

Equipment Adaptive/Mobility 15Electrical System 10Back Over Prevention 7Forward Collision Avoidance 6Unknown Or Other 5Equipment 5
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Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names B115E. Quoting the document number at a service desk is often the fastest route to a diagnosis someone 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. 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 B115E

Source: NHTSA files and the OBD-II standard

Why does this page not define B115E?

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 B115E 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.