P1955 on Chevrolet vehicles
P1955 is named on 5 Chevrolet model years (2020–2024): 13 manufacturer filings and 1 owner report in NHTSA’s files, across Corvette.
Which Chevrolet model years name P1955
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2020 Chevrolet Corvette | Power Train | 3 | 1 |
| 2023 Chevrolet Corvette | Power Train | 3 | — |
| 2022 Chevrolet Corvette | Power Train | 3 | — |
| 2021 Chevrolet Corvette | Electrical System | 3 | — |
| 2024 Chevrolet Corvette | Power Train | 1 | — |
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.
What Chevrolet owners said
Source: NHTSA complaint databaseOwners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — what was said, not a finding that it was true.
The dual clutch transmission on my 2020 C8 Corvette has a diagnostic code of p1955
Chevrolet filings that name P1955
Source: NHTSA manufacturer communicationsBulletins and campaigns Chevrolet filed with NHTSA whose summary names P1955. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 23-NA-139 Service bulletin2023-08-09 · Power Train
- This service bulletin advises the tech on what to do if the specific codes P1955 and/or P0867 have been set for the transmission to correct customer concerns of a Service Transmission Message Displayed on Driver Information Center (DIC), Malfunction Indicator Lamp (MIL) Illuminated.
- 23-NA-139 Service bulletin2023-09-26 · Power Train
- This service bulletin advises the tech on what to do if the specific codes P1955 and/or P0867 have been set for the transmission to correct customer concerns of a Service Transmission Message Displayed on Driver Information Center (DIC), Malfunction Indicator Lamp (MIL) Illuminated.
- 23-NA-139 Service bulletin2023-11-15 · Power Train
- This service bulletin advises the tech on what to do if the specific codes P1955 and/or P0867 have been set for the transmission to correct customer concerns of a Service Transmission Message Displayed on Driver Information Center (DIC), Malfunction Indicator Lamp (MIL) Illuminated.
What P1955 means
Source: SAE J2012 / OBD-IIP1955 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 Chevrolet 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 P1955 a known problem on Chevrolet vehicles?
It is a documented one: NHTSA's files hold 13 manufacturer filings and 1 owner report naming P1955 on 5 Chevrolet 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 Chevrolet models does P1955 appear on most?
2020 Corvette (4 documents), 2023 Corvette (3 documents), 2022 Corvette (3 documents).
Does P1955 on a Chevrolet 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.