Subaru Ascent 2019–2025 — technical service bulletin
Bulletin 16-157-26 · NHTSA communication 11033061 · issued May 12, 2026
Technical service bulletin
communication type
Power Train
component
2019–2025
model years
22
vehicle entries
Official summary
This bulletin announces a design change to the TR690 CVT control valve body which features an enhanced line pressure sensor O-ring, designed to prevent abnormal sensor readings caused by O-ring leakage.
Vehicles covered
- 2019 Subaru Ascent
- 2020 Subaru Ascent
- 2021 Subaru Ascent
- 2022 Subaru Ascent
- 2023 Subaru Ascent
- 2024 Subaru Ascent
- 2025 Subaru Ascent
- 2020 Subaru Legacy
- 2021 Subaru Legacy
- 2022 Subaru Legacy
- 2023 Subaru Legacy
- 2024 Subaru Legacy
- 2025 Subaru Legacy
- 2020 Subaru Outback
- 2021 Subaru Outback
- 2022 Subaru Outback
- 2023 Subaru Outback
- 2024 Subaru Outback
- 2025 Subaru Outback
- 2023 Subaru WRX
- 2024 Subaru WRX
- 2025 Subaru WRX
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.