P0234 on GMC vehicles The turbocharger or supercharger is making more boost than the computer asked for
P0234 is named on 5 GMC model years (2018–2022): 15 manufacturer filings and 0 owner reports in NHTSA’s files, across Terrain.
Which GMC model years name P0234
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2022 GMC Terrain | Engine | 3 | — |
| 2021 GMC Terrain | Engine | 3 | — |
| 2020 GMC Terrain | Engine | 3 | — |
| 2019 GMC Terrain | Engine | 3 | — |
| 2018 GMC Terrain | Engine | 3 | — |
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.
GMC filings that name P0234
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names P0234. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIP5812B Service bulletin2021-09-27 · Engine And Engine Cooling — Engine — Gasoline — Turbo/Supercharger
- This Preliminary information communicates the possibility of dtc p0299 p0234 setting due to oil/moisture cndensate freezing in Turbocharger Wastegate Regulator Solenoid Valve (TCV) during cold weather driving
- PIP5812C Service bulletin2021-11-11 · Engine
- This Preliminary information communicates the possibility of dtc p0299 p0234 setting due to oil/moisture cndensate freezing in Turbocharger Wastegate Regulator Solenoid Valve (TCV) during cold weather driving
- PIP5812C Service bulletin2023-01-05 · Engine And Engine Cooling — Engine — Gasoline — Turbo/Supercharger
- This Preliminary information communicates the possibility of dtc p0299 p0234 setting due to oil/moisture cndensate freezing in Turbocharger Wastegate Regulator Solenoid Valve (TCV) during cold weather driving
What P0234 means
Source: SAE J2012 / OBD-IIThe turbocharger or supercharger is making more boost than the computer asked for.
A stored code names the test that failed, never the part that caused it. The record above is what GMC 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 P0234 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 15 manufacturer filings and 0 owner reports naming P0234 on 5 GMC model years (2018–2022). 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 GMC models does P0234 appear on most?
2022 Terrain (3 documents), 2021 Terrain (3 documents), 2020 Terrain (3 documents).
Does P0234 on a GMC 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.