P0456 on the 2021 Honda Odyssey
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| ATI&11032021902 | 2021-11-09. Service bulletin. 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. |
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| ATI&10052021907 | 2021-10-16. Service bulletin. 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&09102021908 | 2021-09-15. Service bulletin. 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&08252021908 | 2021-09-02. Service bulletin. 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&08092021902 | 2021-08-17. Service bulletin. 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&07222021901 | 2021-07-27. Service bulletin. 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&07202021902 | 2021-07-27. Service bulletin. 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&07062021 | 2021-07-20. Service bulletin. 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. |
8 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.