Honda Civic Si Service Bulletins (2025)

4 manufacturer communications on file.

• August 31, 2026•Document ID: 11036657

  Over The Air
  ELECTRICAL SYSTEM

  Mfr Comm. #:

  AA27867

  Date Added:

  September 2, 2026

  Manufacturer:

  HONDA

  Summary

  Over the Air System Updates - 2025 Civic Si: Software Update for Audio System software version 8A050-T20-AA31.

  Associated Products (1)

  2025 Honda Civic Si
  Associated Documents

  • DownloadMC-11036657-0001.pdf↗
• August 26, 2026•Document ID: 11036409

  Service Bulletin/Repair Instructions
  ENGINE

  Mfr Comm. #:

  A26-010

  Date Added:

  August 27, 2026

  Manufacturer:

  HONDA

  Summary

  Service Bulletin - 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 thru P0304 stored.

  Associated Products (8)

  2026 Honda Civic Si2025 Honda Civic Si2024 Honda Civic2024 Honda Civic Si2023 Honda Civic2023 Honda Civic Si2022 Honda Civic2022 Honda Civic Si
  Associated Documents

  • DownloadMC-11036409-0001.pdf↗
• January 16, 2026•Document ID: 11027811

  Other
  STRUCTURE:BODY

  Mfr Comm. #:

  ATI&01162026902

  Date Added:

  January 27, 2026

  Manufacturer:

  HONDA

  Summary

  Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2026 Civic Touring, Sport Touring & Si vehicles with a customer complaint of a rear shelf assembly vibration while playing music. Customer may also notice a rattle around the child seat anchor tether strap cover area on the rear shelf. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.

  Associated Products (10)

  2026 Honda Civic2026 Honda Civic Si2025 Honda Civic2025 Honda Civic Si2024 Honda Civic2024 Honda Civic Si2023 Honda Civic2023 Honda Civic Si2022 Honda Civic2022 Honda Civic Si
  Associated Documents

  • DownloadMC-11027811-0001.pdf↗
• January 5, 2026•Document ID: 11027805

  Other
  STRUCTURE:BODY

  Mfr Comm. #:

  ATI&01052026904

  Date Added:

  January 27, 2026

  Manufacturer:

  HONDA

  Summary

  Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022-2026 Civic Touring, Sport Touring & Si vehicles with a customer complaint of a rear shelf assembly vibration while playing music. Customer may also notice a rattle around the child seat anchor tether strap cover area on the rear shelf. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.

  Associated Products (10)

  2026 Honda Civic2026 Honda Civic Si2025 Honda Civic2025 Honda Civic Si2024 Honda Civic2024 Honda Civic Si2023 Honda Civic2023 Honda Civic Si2022 Honda Civic2022 Honda Civic Si
  Associated Documents

  • DownloadMC-11027805-0001.pdf↗