Honda Civic Si Service Bulletins (2025)
5 manufacturer communications on file.
- September 25, 2026•Document ID: 11037696Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- A26-010
- Date Added:
- October 1, 2026
- Manufacturer:
- HONDA
SummaryService Bulletin - Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, and/or misfire. In some cases, DTCs P0300 through P0304 may also be stored (DTCs are not required for repair).
Associated Products (8)Associated Documents - August 31, 2026•Document ID: 11036657Over The AirELECTRICAL SYSTEM
- Mfr Comm. #:
- AA27867
- Date Added:
- September 2, 2026
- Manufacturer:
- HONDA
SummaryOver the Air System Updates - 2025 Civic Si: Software Update for Audio System software version 8A050-T20-AA31.
Associated Products (1)Associated Documents - August 26, 2026•Document ID: 11036409Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- A26-010
- Date Added:
- August 27, 2026
- Manufacturer:
- HONDA
SummaryService 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)Associated Documents - January 16, 2026•Document ID: 11027811OtherSTRUCTURE:BODY
- Mfr Comm. #:
- ATI&01162026902
- Date Added:
- January 27, 2026
- Manufacturer:
- HONDA
SummaryDealer 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)Associated Documents - January 5, 2026•Document ID: 11027805OtherSTRUCTURE:BODY
- Mfr Comm. #:
- ATI&01052026904
- Date Added:
- January 27, 2026
- Manufacturer:
- HONDA
SummaryDealer 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)Associated Documents