Honda Accord 2016–2026 — technical service bulletin
Bulletin AEBM08262026901 · NHTSA communication 11036424 · issued Aug 26, 2026
Technical service bulletin
communication type
Engine
component
2016–2026
model years
48
vehicle entries
Official summary
Dealer Message - Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, misfire, and/or DTCs P0300 through P0304 stored.
Vehicles covered
- 2018 Honda Accord
- 2019 Honda Accord
- 2020 Honda Accord
- 2021 Honda Accord
- 2022 Honda Accord
- 2023 Honda Accord
- 2024 Honda Accord
- 2025 Honda Accord
- 2026 Honda Accord
- 2018 Honda Accord Hybrid
- 2019 Honda Accord Hybrid
- 2020 Honda Accord Hybrid
- 2021 Honda Accord Hybrid
- 2022 Honda Accord Hybrid
- 2023 Honda Accord Hybrid
- 2024 Honda Accord Hybrid
- 2025 Honda Accord Hybrid
- 2026 Honda Accord Hybrid
- 2016 Honda Civic
- 2017 Honda Civic
- 2018 Honda Civic
- 2019 Honda Civic
- 2020 Honda Civic
- 2021 Honda Civic
- 2022 Honda Civic
- 2023 Honda Civic
- 2024 Honda Civic
- 2025 Honda Civic
- 2026 Honda Civic
- 2025 Honda Civic Hybrid
- 2026 Honda Civic Hybrid
- 2017 Honda CR-V
- 2018 Honda CR-V
- 2019 Honda CR-V
- 2020 Honda CR-V
- 2021 Honda CR-V
- 2022 Honda CR-V
- 2023 Honda CR-V
- 2024 Honda CR-V
- 2025 Honda CR-V
- 2026 Honda CR-V
- 2020 Honda CR-V Hybrid
- 2021 Honda CR-V Hybrid
- 2022 Honda CR-V Hybrid
- 2023 Honda CR-V Hybrid
- 2024 Honda CR-V Hybrid
- 2025 Honda CR-V Hybrid
- 2026 Honda CR-V Hybrid
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.