Honda Accord Service Bulletins (2020)
295 manufacturer communications on file.
- October 15, 2026•Document ID: 11038789OtherELECTRICAL SYSTEM
- Mfr Comm. #:
- ONL6LA10152026
- Date Added:
- October 29, 2026
- Manufacturer:
- HONDA
SummaryOwner Notification Letter - a programming issue within the Wireless CarPlay and Android Auto software may cause an invalid "License Authentication Error" message to appear on the display audio screen after approximately 1,500 ignition ON/OFF cycles.
Associated Products (5)Associated Documents - October 1, 2026•Document ID: 11038473Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- AATS31549
- Date Added:
- October 15, 2026
- Manufacturer:
- HONDA
SummaryTech Line Summary Article - Customers may report that the center display unit changes screens on its own, registers unintended inputs, or operates erratically without user interaction. The condition may be more noticeable when vehicle interior temperatures are elevated.
Associated Products (5)Associated Documents - September 25, 2026•Document ID: 11037690Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- A26-006
- 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 (5)Associated Documents - September 25, 2026•Document ID: 11037688Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- A26-004
- 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 (3)Associated Documents - September 25, 2026•Document ID: 11037687Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- A26-003
- 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 (5)Associated Documents - September 16, 2026•Document ID: 11037426OtherELECTRICAL SYSTEM
- Mfr Comm. #:
- AAHS09162026902
- Date Added:
- September 21, 2026
- Manufacturer:
- HONDA
SummaryDealer Message - On August 21st, 2026, American Honda issued a Product Update for certain 2018-2022 Accord and Accord Hybrid models that received the accessory Wireless CarPlay and Android Auto upgrade. Refer to Service Bulletin 26-068 for additional information regarding the Product Update.
Associated Products (5)Associated Documents - September 10, 2026•Document ID: 11037300OtherFORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; LANE DEPARTURE: ASSIST; FORWARD COLLISION AVOIDANCE: WARNINGS
- Mfr Comm. #:
- ONL6UV09092026
- Date Added:
- September 12, 2026
- Manufacturer:
- HONDA
SummaryOwner Notification Letter - Honda has developed software updates to the Honda Sensing system to enhance driver experience by modifying the circumstances when the advanced driver assist system (ADAS) decelerates the vehicle or the extent of deceleration. The software covers Adaptive Cruise Control (ACC), Collision Mitigation Braking System (CMBS), and Road Departure Mitigation (RDM).
Associated Products (6)Associated Documents - August 31, 2026•Document ID: 11036655OtherELECTRICAL SYSTEM
- Mfr Comm. #:
- AATS31549
- Date Added:
- September 2, 2026
- Manufacturer:
- HONDA
SummaryTech Line Summary - Customers may report that the center display unit changes screens on its own, registers unintended inputs, or operates erratically without user interaction. The condition may be more noticeable when vehicle interior temperatures are elevated.
Associated Products (5)Associated Documents - August 26, 2026•Document ID: 11036405Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- A26-006
- 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 (5)Associated Documents - August 26, 2026•Document ID: 11036403Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- A26-004
- 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 (3)Associated Documents - August 26, 2026•Document ID: 11036424OtherENGINE
- Mfr Comm. #:
- AEBM08262026901
- Date Added:
- August 27, 2026
- Manufacturer:
- HONDA
SummaryDealer 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.
Associated Products (30)2026 Honda Accord2026 Honda Civic2026 Honda CR-V2025 Honda Accord2025 Honda Civic2025 Honda CR-V2024 Honda Accord2024 Honda Civic2024 Honda CR-V2023 Honda Accord2023 Honda Civic2023 Honda CR-V2022 Honda Accord2022 Honda Civic2022 Honda CR-V2021 Honda Accord2021 Honda Civic2021 Honda CR-V2020 Honda Accord2020 Honda Civic+ 10 moreAssociated Documents - August 26, 2026•Document ID: 11036336Service Bulletin/Repair InstructionsENGINE
- Mfr Comm. #:
- A26-003
- Date Added:
- August 24, 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 (5)Associated Documents - August 21, 2026•Document ID: 11036326Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- A26-068
- Date Added:
- August 24, 2026
- Manufacturer:
- HONDA
SummaryService Bulletin - On certain 2018-2022 Accord and 2018-22 Accord Hybrid vehicles equipped with the Wireless CarPlay and Android Auto software upgrade, a programming issue within the Wireless CarPlay and Android Auto software may cause an invalid "License Authentication Error" message to appear on the display audio screen after approximately 1,500 ignition ON/OFF cycles.
Associated Products (5)Associated Documents - August 21, 2026•Document ID: 11036323OtherELECTRICAL SYSTEM
- Mfr Comm. #:
- AEBM08212026901
- Date Added:
- August 24, 2026
- Manufacturer:
- HONDA
SummaryDealer Message - Due to a software programming issue within the Wireless CarPlay and Android Auto system, an invalid "License Authentication Error" message may appear on the Display Audio screen after approximately 1,500 ignition switch activations ON/OFF.
Associated Products (5)Associated Documents - July 31, 2026•Document ID: 11035781Service Bulletin/Repair InstructionsFORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; FORWARD COLLISION AVOIDANCE: WARNINGS; LANE DEPARTURE: WARNING
- Mfr Comm. #:
- A26-091
- Date Added:
- August 5, 2026
- Manufacturer:
- HONDA
SummaryService Bulletin - Honda has developed software updates to the Honda Sensing system to enhance driver experience by modifying the circumstances when the advanced driver assist system (ADAS) decelerates the vehicle or the extent of deceleration. The software covers Adaptive Cruise Control (ACC), Collision Mitigation Braking System (CMBS), and Road Departure Mitigation (RDM).
Associated Products (6)Associated Documents - July 24, 2026•Document ID: 11035885Service Bulletin/Repair InstructionsFORWARD COLLISION AVOIDANCE: WARNINGS
- Mfr Comm. #:
- A26-091 v1
- Date Added:
- August 5, 2026
- Manufacturer:
- HONDA
SummaryService Bulletin - American Honda has identified a condition that may affect Collision Mitigation Braking System (CMBS) operation. Due to software programming issues of the Advanced Driver Assistance System (ADAS), unexpected vehicle deceleration may occur.
Associated Products (6)Associated Documents - July 24, 2026•Document ID: 11035777OtherFORWARD COLLISION AVOIDANCE: WARNINGS; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
- Mfr Comm. #:
- AEBM07242026901
- Date Added:
- August 5, 2026
- Manufacturer:
- HONDA
SummaryDealer Message - Due to software programming issues of the Advanced Driver Assistance System (ADAS), unexpected vehicle deceleration may occur.
Associated Products (6)Associated Documents - December 19, 2025•Document ID: 11026975Service Bulletin/Repair InstructionsELECTRICAL SYSTEM
- Mfr Comm. #:
- ATS30025
- Date Added:
- January 5, 2026
- Manufacturer:
- HONDA
SummaryTech Line Summary - Customers who have purchased the Accessory CarPlay /Android Auto upgrade are complaining that a pop-up message appears on the audio unit display stating, “Please insert USB drive containing valid software license file, and press OK button”. When this message is displayed, the audio unit is not responsive to control inputs, however the rear-view camera remains fully functional.
Associated Products (5)Associated Documents - December 19, 2025•Document ID: 11026972OtherELECTRICAL SYSTEM
- Mfr Comm. #:
- APS&12192025902
- Date Added:
- January 5, 2026
- Manufacturer:
- HONDA
SummaryDealer Message - Some customers have reported a pop-up message on the audio unit display stating: “Please insert USB drive containing valid software license file and press OK button.” When this message appears, the audio unit becomes unresponsive. The rear-view camera remains functional.
Associated Products (5)Associated Documents - December 19, 2025•Document ID: 11026971OtherELECTRICAL SYSTEM
- Mfr Comm. #:
- AAR12192025901
- Date Added:
- January 5, 2026
- Manufacturer:
- HONDA
SummaryDealer Message - Some customers have reported a pop-up message on the audio unit display stating: “Please insert USB drive containing valid software license file and press OK button.” When this message appears, the audio unit becomes unresponsive. The rear-view camera remains functional.
Associated Products (5)Associated Documents