P277C on the 2025 Volvo XC90
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 36774.4.0 | 2026-10-05. Service bulletin. This is a Technical Journal: Text plus 1 PDF -- DTC TCM P277C07 set. If the TCM DTC listed below is set, A new transmission hardware solution has been introduced starting from transmission serial number 25M8L30144, which serves as a defined break point for updated production. *If the DTC is confirmed and the transmission serial number is after the break point: Do NOT replace the transmission follow the advise under "Service". |
|---|---|
| 36774.3.0 | 2026-07-14. Service bulletin. This is a Technical Journal: DTC TCM P277C07 set. If the TCM DTC listed below is set, A new transmission hardware solution has been introduced starting from transmission serial number 25M8L30144, which serves as a defined break point for updated production. *If the DTC is confirmed and the transmission serial number is after the break point: Do NOT replace the transmission follow the advise under "Service". |
| 36774 | 2024-10-30. Service bulletin. This is a Technical Journal: DTC TCM P277C07 set. Delete the DTC and verify that it does not return on a short test drive before releasing the car to the customer. |
3 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.