2023 Honda Civic SI service bulletins & manufacturer communications

3 manufacturer communications are on file with NHTSA for the 2023 Honda Civic SI. TSBs are repair guidance for dealers — they are not recalls, and repairs are not automatically free.

• 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 …
  A26-010 · Technical service bulletin · Engine · issued Aug 26, 2026
• 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 assemb…
  ATI&01162026902 · Technical service bulletin · Structure · issued Jan 16, 2026
• 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 assemb…
  ATI&01052026904 · Technical service bulletin · Structure · issued Jan 5, 2026