B2A16
0 owner reports and 627 manufacturer filings across 85 model years from Subaru.
Where B2A16 shows up
Source: NHTSA manufacturer communications and complaintsShowing the 25 model years where B2A16 appears most; it is on file for 85 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.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
B2A16 by make
The same record, one make at a time: the model years, bulletins and owner reports that name B2A16 on that maker’s vehicles.
What it gets filed under
627 manufacturer filings name B2A16. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names B2A16.
- 18-226-25R Service bulletin2025-12-08 · Engine
- This Service Information Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16 (Immobilizer Key Collation Diagnosis).
- 15-251-19R Service bulletin2025-06-24 · Electrical System
- This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
- 15-251-19R Service bulletin2025-04-30 · Electrical System
- This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
- 18-226-25 Service bulletin2025-02-12 · Electrical System
- This Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16 (Immobilizer Key Collation Diagnosis).
- 15-251-19R Service bulletin2025-02-10 · Electrical System
- "This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16."
- 15-251-19R Service bulletin2024-08-05 · Electrical System
- This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
What B2A16 means
Source: SAE J2012 / OBD-IIB2A16 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
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 B2A16
Source: NHTSA files and the OBD-II standardCan I keep driving with B2A16 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. 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.