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Service bulletins for the 2021 Honda Odyssey

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

152 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
ATI&082520219012021-09-02. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 Odysseys with a customer complaint of the power sliding door not closing, not opening or stopping/reversing during either movement. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
ATI&081820212021-08-25. Service bulletin. VISIBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 Odysseys with a customer complaint of the auto-up feature failure of the rear sliding door window; the window goes up halfway and falsely reverse downward. 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.
ATI&081620219052021-08-25. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Odysseys with a customer complaint of the fuel door not opening, not closing or the gauge cluster displaying error for fuel lid open when it is actually closed. 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.
ATI&080920219082021-08-17. Service bulletin. STRUCTURE; EQUIPMENT; ELECTRICAL SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2021-2022 Odysseys with a customer complaint of the power sliding door not closing, not opening or stopping/reversing during either movement. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
ATI&080920219032021-08-17. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accords, 2019-2017 Civics, 2017-2021 CR-Vs, 2018-2021 Odysseys & 2018-2021 Pilots with a customer complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
ATI&080920219022021-08-17. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Odysseys with a customer complaint of fuel smell and/or MIL on with DTC P0456 (EVAP System Very Small Leak Detected) stored. To better understand the cause of this condition, AHM would like to inspect & collect specific information from the vehicle prior to you attempting a repair of any kind.
AATS2103012021-08-13. Service bulletin. ELECTRICAL SYSTEM. Tech Line Summary Article - If you have a customer stating their Apple iPhone 12 (all models: iPhone 12, iPhone 12 mini, iPhone 12 Pro, and iPhone 12 Pro Max) does not charge when using the wireless charger, please let them know that we are aware of these concerns and are currently looking into it. Replacing the wireless charger or using another iPhone 12 will not address the customer's concern. Please inform your customer to use a USB charging cord until a repair is available.
ATI&072920219022021-08-03. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Odysseys with a customer complaint of the fuel door not opening, not closing or the gauge cluster displaying error for fuel lid open when it is actually closed. 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.
ATI&072920219012021-08-03. Service bulletin. VISIBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2022 Odysseys with a customer complaint of the auto-up feature failure of the rear sliding door window; the window goes up halfway and falsely reverse downward. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
A21-0212021-08-03. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin - The MIL comes on with DTC U0155 (Lost Communication with Gauge Control Module).
ATI&072220219022021-07-27. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accords, 2019-2017 Civics, 2017-2021 CR-Vs, 2018-2021 Odysseys & 2018-2021 Pilots with a customer complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
ATI&072220219012021-07-27. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Odysseys with a customer complaint of fuel smell and/or MIL on with DTC P0456 (EVAP System Very Small Leak Detected) stored. To better understand the cause of this condition, AHM would like to inspect & collect specific information from the vehicle prior to you attempting a repair of any kind.
ATI&072020219022021-07-27. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Odysseys with a customer complaint of fuel smell and/or MIL on with DTC P0456 (EVAP System Very Small Leak Detected) stored. To better understand the cause of this condition, AHM would like to inspect & collect specific information from the vehicle prior to you attempting a repair of any kind.
A20-0492021-07-21. Service bulletin. EQUIPMENT. Service Bulletin - There is a popping or crackling from the speakers or no sound from the audio system. You may also see a Network Loss message and/or display issues.
ATI&070720219032021-07-20. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accords, 2019-2017 Civics, 2017-2021 CR-Vs, 2018-2021 Odysseys & 2018-2021 Pilots with a customer complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
ATI&070620212021-07-20. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020-2021 Odysseys with a customer complaint of fuel smell and/or MIL on with DTC P0456 (EVAP System Very Small Leak Detected) stored. To better understand the cause of this condition, AHM would like to inspect & collect specific information from the vehicle prior to you attempting a repair of any kind.
A21060B2021-07-03. Service bulletin. ELECTRICAL SYSTEM. ServiceNews Article - If you have a customer stating their Apple iPhone 12 (all models: iPhone 12, iPhone 12 mini, iPhone 12 Pro, and iPhone 12 Pro Max) does not charge when using the wireless charger, let them know that we are aware of these concerns and are currently looking into it. Replacing the wireless charger or using another iPhone 12 will not address the customer's concern. Advise your customer to use a USB charging cord until a repair is available.
ATI&061520219072021-06-22. Service bulletin. SERVICE BRAKES. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accords, 2019-2017 Civics, 2017-2021 CR-Vs, 2018-2021 Odysseys & 2018-2021 Pilots with a customer complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
A20-0492021-06-22. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin - There is a popping or crackling from the speakers or no sound from the audio system. You may also see a Network Loss message and/or display issues.
APaS052620219042021-06-04. Service bulletin. SERVICE BRAKES. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accords, 2019-2017 Civics, 2017-2021 CR-Vs, 2018-2021 Odysseys & 2018-2021 Pilots with a customer complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
APaS042220219032021-04-27. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accords, 2019-2017 Civics, 2017-2021 CR-Vs, 2018-2021 Odysseys & 2018-2021 Pilots with a customer complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
APaS033020219042021-04-05. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accords, 2019-2017 Civics, 2017-2021 CR-Vs, 2018-2021 Odysseys & 2018-2021 Pilots with a customer complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
AATS2103012021-03-23. Service bulletin. ELECTRICAL SYSTEM. Tech Line Summary Article - If you have a customer stating their Apple iPhone 12 (all models: iPhone 12, iPhone 12 mini, iPhone 12 Pro, and iPhone 12 Pro Max) does not charge when using the wireless charger, please let them know that we are aware of these concerns and are currently looking into it. Replacing the wireless charger or using another iPhone 12 will not address the customer's concern.
APaS031020219012021-03-16. Service bulletin. SERVICE BRAKES. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2021 Accords, 2019-2017 Civics, 2017-2021 CR-Vs, 2018-2021 Odysseys & 2018-2021 Pilots with a customer complaint of an unexpected CMBS operation or a brake application. To better understand the cause of this condition, AHM would like to collect specific information from the vehicle prior to you attempting a repair of any kind.
A20-0492021-02-26. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Service Bulletin - There is a popping or crackling from the speakers or no sound from the audio system. You may also see a Network Loss message and/or display issues.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.