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Diagnostic trouble code

B14F0

0 owner reports and 231 manufacturer filings across 70 model years from Mazda.

BodyManufacturer-specific231 manufacturer filings

Where B14F0 shows up

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2019 Mazda Mazda3Forward Collision Avoidance9
2020 Mazda CX-30Equipment Adaptive/Mobility6
2020 Mazda Mazda3Forward Collision Avoidance6
2019 Mazda CX-3Forward Collision Avoidance5
2018 Mazda CX-3Forward Collision Avoidance5
2017 Mazda CX-3Forward Collision Avoidance5
2016 Mazda CX-3Forward Collision Avoidance5
2019 Mazda CX-5Forward Collision Avoidance5
2018 Mazda CX-5Forward Collision Avoidance5
2017 Mazda CX-5Forward Collision Avoidance5
2016 Mazda CX-5Forward Collision Avoidance5
2019 Mazda CX-9Forward Collision Avoidance5
2018 Mazda CX-9Forward Collision Avoidance5
2017 Mazda CX-9Forward Collision Avoidance5
2016 Mazda CX-9Forward Collision Avoidance5
2019 Mazda MX-5Forward Collision Avoidance5
2018 Mazda MX-5Forward Collision Avoidance5
2017 Mazda MX-5Forward Collision Avoidance5
2016 Mazda MX-5Forward Collision Avoidance5
2018 Mazda Mazda3Forward Collision Avoidance5
2017 Mazda Mazda3Forward Collision Avoidance5
2016 Mazda Mazda3Forward Collision Avoidance5
2019 Mazda Mazda6Forward Collision Avoidance5
2018 Mazda Mazda6Forward Collision Avoidance5
2017 Mazda Mazda6Forward Collision Avoidance5
2016 Mazda Mazda6Forward Collision Avoidance5
2020 Mazda CX-3Forward Collision Avoidance4
2021 Mazda CX-30Visibility4
2020 Mazda CX-5Forward Collision Avoidance4
2020 Mazda CX-9Forward Collision Avoidance4
2020 Mazda MX-5Equipment Adaptive/Mobility4
2021 Mazda Mazda3Visibility4
2020 Mazda Mazda6Equipment Adaptive/Mobility4
2021 Mazda CX-3Lane Departure3
2021 Mazda CX-5Lane Departure3
2021 Mazda CX-9Equipment Adaptive/Mobility3
2021 Mazda MX-5Exterior Lighting3
2021 Mazda Mazda6Exterior Lighting3
2023 Mazda CX-30Electrical System2
2022 Mazda CX-30Electrical System2
2023 Mazda CX-5Electrical System2
2022 Mazda CX-5Electrical System2
2026 Mazda CX-50Unknown Or Other2
2025 Mazda CX-50Unknown Or Other2
2023 Mazda CX-50Electrical System2
2026 Mazda CX-70Unknown Or Other2
2025 Mazda CX-70Unknown Or Other2
2023 Mazda CX-9Electrical System2
2022 Mazda CX-9Electrical System2
2026 Mazda CX-90Unknown Or Other2
2025 Mazda CX-90Unknown Or Other2
2024 Mazda CX-90Unknown Or Other2
2023 Mazda MX-30Electrical System2
2022 Mazda MX-30Electrical System2
2023 Mazda MX-5Electrical System2
2022 Mazda MX-5Electrical System2
2023 Mazda Mazda3Electrical System2
2022 Mazda Mazda3Electrical System2
2026 Mazda CX-30Unknown Or Other1
2025 Mazda CX-30Unknown Or Other1

Showing the 60 model years where B14F0 appears most; it is on file for 70 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

Forward Collision Avoidance 53Unknown Or Other 48Electrical System 46Equipment Adaptive/Mobility 21Exterior Lighting 12Lane Departure 10
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Manufacturer filings that name it

Source: NHTSA manufacturer communications

Service bulletins and campaigns whose filed summary names B14F0. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.

What B14F0 means

Source: SAE J2012 / OBD-II

B14F0 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 B14F0

Source: NHTSA files and the OBD-II standard

Why does this page not define B14F0?

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 B14F0 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.