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Home›Trouble codes›B15A5› Lincoln
Diagnostic trouble code · Lincoln

B15A5 on Lincoln vehicles

B15A5 is named on 12 Lincoln model years (2020–2024): 36 manufacturer filings and 0 owner reports in NHTSA’s files, across Nautilus, Aviator, Corsair, Navigator.

Body 12 model years 36 manufacturer filings

Which Lincoln model years name B15A5

Source: NHTSA manufacturer communications and complaints
Model yearFiled underBulletinsOwner reports
2020 Lincoln NautilusElectrical System6—
2021 Lincoln AviatorElectrical System4—
2021 Lincoln CorsairElectrical System4—
2021 Lincoln NavigatorElectrical System4—
2020 Lincoln CorsairElectrical System4—
2020 Lincoln NavigatorElectrical System4—
2021 Lincoln NautilusEquipment Adaptive/Mobility3—
2022 Lincoln CorsairElectrical System2—
2022 Lincoln NautilusElectrical System2—
2024 Lincoln AviatorNot specified1—
2024 Lincoln NavigatorNot specified1—
2023 Lincoln NautilusNot specified1—

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 21 Not specified 10 Equipment Adaptive/Mobility 4 Equipment 1
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Lincoln filings that name B15A5

Source: NHTSA manufacturer communications

Bulletins and campaigns Lincoln filed with NHTSA whose summary names B15A5. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

What B15A5 means

Source: SAE J2012 / OBD-II

B15A5 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 Lincoln and its owners have filed about it; the code’s page across every make has the whole file.

From here
Get a model's new bulletins by email See what owners reported Look up a bulletin by its number Watch a VIN for new recalls

Common questions

Source: NHTSA files and the OBD-II standard

Is B15A5 a known problem on Lincoln vehicles?

It is a documented one: NHTSA's files hold 36 manufacturer filings and 0 owner reports naming B15A5 on 12 Lincoln model years (2020–2024). 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 Lincoln models does B15A5 appear on most?

2020 Nautilus (6 documents), 2021 Aviator (4 documents), 2021 Corsair (4 documents).

Does B15A5 on a Lincoln 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.

Where to go next

pages beside this code
Filed alongside U200D Another code that appears in the same filings and owner reports as B15A5.Filed alongside U200E Another code that appears in the same filings and owner reports as B15A5.Vehicle 2020 Lincoln Nautilus The model year B15A5 is filed against most often.The data Trouble codes by API GET /v1/dtc joins every code to bulletins and owner reports — free tier, no card.