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Service bulletins for the 2018 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.

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

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Bulletins, newest first
APOC051020239012023-05-23. Service bulletin. EQUIPMENT; STRUCTURE. Dealer Message - American Honda is requesting a parts inspection for only 76253-THR-A12 - MIRROR SET, L. Check your current inventory and return any inventory of these parts to American Honda immediately that are missing the 2 silver tabs/clips. They tabs/clips may be loose in the package.
A23-0232023-04-22. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY; ENGINE AND ENGINE COOLING. Service Bulletin - The engine will not crank on initial startup after precipitation and sub-freezing temperatures. Water can enter the starter motor, and when temperatures drop below freezing, the water will freeze inside the starter motor. This will prevent the starter from cranking the engine.
A23-0232023-03-18. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - The engine will not crank on initial startup after precipitation and sub-freezing temperatures. Water can enter the starter motor, and when temperatures drop below freezing, the water will freeze inside the starter motor. This will prevent the starter from cranking the engine.
ATI&020720239052023-02-15. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message- American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2018 Odyssey, Pilot, Ridgeline with a customer complaint of the vehicle running rough or in low power mode with the Malfunction Indicator Light (MIL) on with one or more of the DTC listed below (in Qualifiers) stored. 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&011920232023-01-25. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2018 Odyssey, Pilot, Ridgeline with a customer complaint of the vehicle running rough or in low power mode with the Malfunction Indicator Light (MIL) on with one or more of the DTC listed below (in Qualifiers) stored. 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.
ONL6HO102120222022-10-24. Service bulletin. ELECTRICAL SYSTEM; BACK OVER PREVENTION. Owner Notification Letter - Our records indicate that a PRODUCT UPDATE has not been completed on this vehicle (Vehicle Identification Number [VIN NUMBER]). On certain 2018 Odyssey EX, EX-L, Touring, and Elite trim levels, the Display Audio and rearview camera stay off during a quick ignition cycle. To correct this, an audio software update is available. Honda strongly recommends updating your vehicle as soon as possible.
A22-0272022-09-27. Service bulletin. ELECTRICAL SYSTEM. "Service Bulletin - Audio sound will stop and No Audio Connection message appears in the audio display. NOTE: This is not related to MOST Ring break conditions." "Service Bulletin - Audio sound will stop and No Audio Connection message appears in the audio display. NOTE: This is not related to MOST Ring break conditions."
ONL6RP091620222022-09-22. Service bulletin. VISIBILITY. Owner's Notification Letter - Our records indicate that a Product Update has not been completed on this vehicle (Vehicle Identification Number [VIN NUMBER]). During manufacturing, the rearview camera was not properly sealed. This can let moisture enter the camera, causing the camera display to be cloudy or the camera not to work, and/or a Rear Camera Not Available message to appear.
A22-0272022-09-09. Service bulletin. ELECTRICAL SYSTEM. Service bulletin - Audio sound will stop and No Audio Connection message appears in the audio display. Audio amplifier software error.
A22-0012022-09-09. Service bulletin. ELECTRICAL SYSTEM. Service bulletin - On February of 2022, the 3G network will no longer support the in-vehicle services that the vehicle has previously supported. As of August 23, 2022, the Product Improvement Campaign has ended. The TCU can no longer be updated using Over The Air updates. If the customer needs to restore TCU services, the only option is to replace the TCU. This would be done as a customer pay repair.
A22-0272022-09-09. Service bulletin. ELECTRICAL SYSTEM. "Service bulletin - Audio sound will stop and No Audio Connection message appears in the audio display. NOTE: This is not related to MOST Ring break conditions."
ONLH6CODY08082022022-09-09. Service bulletin. ELECTRICAL SYSTEM. Customer letter - Our records indicate that a Product Update has not been completed on this vehicle . The audio/information screen may show the clock being off by 1 hour. To correct this, an audio software update is available. Honda strongly recommends updating your vehicle as soon as possible.
A22-0182022-08-02. Service bulletin. LATCHES/LOCKS/LINKAGES; STRUCTURE. Service bulletin - After powering open, the tailgate either slowly sags down or the power tailgate control unit sounds a warning tone before powering the tailgate closed. The right tailgate spring internal damper is damaged and does not have sufficient pressure to support the tailgate.
A22-0102022-07-07. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; STRUCTURE; VISIBILITY. Service bulletin - When activating the sliding door power window auto-up feature, the window rolls up halfway and then rolls back down. There could be a pinch detection software compatibility issue between the power window regulator control unit and the rear window switch.
24142_honda_6gb_2022-07-07. Service bulletin. COMMUNICATION:MANUFACTURER TELEMATICS; ELECTRICAL SYSTEM. "Notice - Our records indicate that a PRODUCT IMPROVEMENT UPDATE has not been completed on this vehicle (Vehicle Identification Number [VIN NUMBER]). The date for updating vehicles was extended from February 22, 2022 to August 22, 2022. As of August 23, 2022, the 3G network will no longer support the in-vehicle services that the vehicle has previously supported. The Telematics Control Unit (TCU) using the Over the Air (OTA) update is required to connect to the VoLTE network to continue communications. Honda strongly recommends updating your vehicle as soon as possible, or risk having to replace the TCU at your cost."
ONL6GB012620222022-02-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Owner Notification Letter - On February 22, 2022, the 3G network will no longer support the in-vehicle services that previously were supported for your vehicle. The Telematics Control Unit (TCU) in your vehicle must be updated using the Over the Air (OTA) update to connect to the VoLTE network to continue communications. Honda strongly recommends updating your vehicle as soon as possible. After February 22, 2022, restoring services will require a customer pay TCU replacement performed by a service technician at an authorized dealer.
A22-0012022-02-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Service Bulletin - On February 22, 2022 the current 3G network that the vehicle connects to for services, will no longer be in-service. The Telematics Control Unit (TCU) Over the Air Update (OTA) is required to connect to the VoLTE network to continue communications.
ABOM011420222022-01-19. Service bulletin. ELECTRICAL SYSTEM; COMMUNICATION:MANUFACTURER TELEMATICS. Dealer Message - Today, January 14, 2022, Honda is announcing a product improvement campaign (PIC) for certain 2018-2020 Odyssey, 2019-2021 Passport, and 2019-2022 Pilot vehicles to update the telematics control unit (TCU) software for an upcoming network service change. Perform an iN VIN status inquiry to determine which units in your inventory are affected.
A22-0012022-01-19. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI; COMMUNICATION:MANUFACTURER TELEMATICS. Service Bulletin - On February 22, 2022 the current 3G network that the vehicle connects to for services, will no longer be in-service. The Telematics Control Unit (TCU) Over the Air Update (OTA) is required to connect to the VoLTE network to continue communications.
AATS2111012021-11-24. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; VISIBILITY. Tech Line Summary Article - Customers are reporting the windows roll up partially but stop and roll back down when attempting to close the sliding door windows using the Auto-Up feature. An investigation of the complaint has identified a software compatibility issue between the window switch and window regulator. We are currently working on a fix, but there is currently no recommended repair. Until a repair is made available, advise the customer to close the window using manual operation by lightly pulling up on the switch until the desired position is reached. Also, they should avoid pulling up firmly on the switch to prevent activating automatic operation and the Auto-Up feature.
ATI&102720219022021-11-03. 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&102520219042021-11-03. 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&101120219022021-10-19. 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&100520219062021-10-16. 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.
A19-1242021-10-16. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING. Service Bulletin - The transmission has intermittent harsh or jerky upshifts with steady acceleration, or the MIL comes on with DTC P0716.

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