P3055 on Buick vehicles
P3055 is named on 11 Buick model years (2017–2021): 26 manufacturer filings and 0 owner reports in NHTSA’s files, across LaCrosse, Regal, Enclave.
Which Buick model years name P3055
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2020 Buick Regal | Engine | 3 | — |
| 2018 Buick LaCrosse | Engine | 3 | — |
| 2018 Buick Regal | Engine | 3 | — |
| 2017 Buick LaCrosse | Equipment | 3 | — |
| 2021 Buick Enclave | Engine | 2 | — |
| 2020 Buick Enclave | Electrical System | 2 | — |
| 2019 Buick Enclave | Engine | 2 | — |
| 2019 Buick LaCrosse | Engine | 2 | — |
| 2019 Buick Regal | Engine | 2 | — |
| 2018 Buick Enclave | Engine | 2 | — |
| 2017 Buick Enclave | Electrical System | 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 P3055
Source: NHTSA manufacturer communicationsBulletins and campaigns Buick filed with NHTSA whose summary names P3055. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 17NA399 Service bulletin2017-12-15 · Equipment — Appliance — Air Conditioner
- This technical bulletin provides a procedure to clean out the HVAC drain hose if a vehicle has a condition of Front Carpet Wet and/or Musty Smell with Possible DTC P3055 or P3056 due to the water coming inside.
- 21NA139 Service bulletin2021-06-21 · Engine And Engine Cooling — Engine — Engine Control Module (Ecu/Ecm)
- This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
- 21-NA-139 Service bulletin2025-04-02 · Engine
- This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
What P3055 means
Source: SAE J2012 / OBD-IIP3055 is a manufacturer-specific code: the second character is a 3, 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 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 P3055 a known problem on Buick vehicles?
It is a documented one: NHTSA's files hold 26 manufacturer filings and 0 owner reports naming P3055 on 11 Buick model years (2017–2021). 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 P3055 appear on most?
2018 LaCrosse (3 documents), 2017 LaCrosse (3 documents), 2020 Regal (3 documents).
Does P3055 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.