C05B0 on Buick vehicles
C05B0 is named on 6 Buick model years (2020–2023): 12 manufacturer filings and 0 owner reports in NHTSA’s files, across Enclave, Envision.
Which Buick model years name C05B0
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2023 Buick Enclave | Service Brakes | 2 | — |
| 2023 Buick Envision | Service Brakes | 2 | — |
| 2022 Buick Enclave | Service Brakes | 2 | — |
| 2022 Buick Envision | Service Brakes | 2 | — |
| 2021 Buick Enclave | Service Brakes | 2 | — |
| 2020 Buick Enclave | Service Brakes | 2 | — |
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.
Buick filings that name C05B0
Source: NHTSA manufacturer communicationsBulletins and campaigns Buick filed with NHTSA whose summary names C05B0. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 22-NA-247 Service bulletin2022-12-06 · Service Brakes, Hydraulic
- This service bulletin provides information to dealership personnel that after performing a brake inspection, brake pad replacement, or any other repair that requires the caliper piston to be reseated may be causing DTC C05B0 to falsely set for eBoost applications.
- 22-NA-247 Service bulletin2023-04-11 · Electrical System
- This service bulletin provides information to dealership personnel that after performing a brake inspection, brake pad replacement, or any other repair that requires the caliper piston to be reseated may be causing DTC C05B0 to falsely set for eBoost applications.
What C05B0 means
Source: SAE J2012 / OBD-IIC05B0 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. The record above is what Buick and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs C05B0 a known problem on Buick vehicles?
It is a documented one: NHTSA's files hold 12 manufacturer filings and 0 owner reports naming C05B0 on 6 Buick model years (2020–2023). 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 Buick models does C05B0 appear on most?
2023 Enclave (2 documents), 2022 Enclave (2 documents), 2021 Enclave (2 documents).
Does C05B0 on a Buick 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.