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Service bulletins for the 2023 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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
ATI&073120259052025-08-08. Other. ENGINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Odysseys, Passports, and Ridgelines with a customer complaint of a no auto re-start condition after going into an auto idle stop. The push button ignition may or may not restart the engine. 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&071520259012025-07-23. Other. ENGINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Odysseys, Passports, and Ridgelines with a customer complaint of a no auto re-start condition after going into an auto idle stop. The push button ignition may or may not restart the engine. 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&052120259022025-06-05. Other. ENGINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 Odysseys, Passports, Pilots, and Ridgelines with a customer complaint of a no auto re-start condition after going into an auto idle stop. The push button ignition may or may not restart the engine. 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.
ONL6AX022025A2025-03-05. Other. ENGINE. Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engaging, your vehicle may not automatically restart.
A24-0852024-07-26. Service bulletin. ENGINE. Service Bulletin - MIL flashes and vehicle will not accelerate, low power. After cycling the ignition, the symptom does not return with no stored DTCs. This issue is more common in regions with cold weather (specifically near or below freezing temperatures). Usually after a long drive (around 2 hours) and accelerating while cornering.
A24-0852024-07-01. Service bulletin. ENGINE. Service Bulletin - The MIL flashes and vehicle will not accelerate, low power. After cycling the ignition, the symptom does not return with no stored DTCs. This issue is more common in regions with cold weather (specifically near or below freezing temperatures). Usually after a long drive (around 2 hours) and accelerating while cornering. Moisture accumulation in the intake manifold during long drives gets drawn into the combustion chamber while cornering, causing misfires.
A24040A2024-05-15. Other. ENGINE. Service NewsDue to On-Board Diagnostic (OBD) regulation change starting with 2019 vehicles, American Honda’s Variable Valve Timing and Lift Electronic Control (VTEC) On-Board Diagnostic monitors are now included in the EGR/VVT OBD Monitor Readiness status group. Due to some customer’s driving patterns, they may not drive in the fashion needed to operate the VTEC (EGR/VVT) that only operates above 5,350 rpm to run the OBD monitoring. Therefore, the EGR/VVT OBD monitor group readiness status is not set to “Complete” when the customer presents their vehicle to a Smog Check station for inspection.
ONL6AX01102024A2024-01-17. Service bulletin. ENGINE AND ENGINE COOLING. Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engaging, your vehicle may not automatically restart.
A23-0912023-12-23. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Service Bulletin - Due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 (Evaporative Emission (EVAP) System Purge Flow Malfunction).
ABOM111020239022023-11-29. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Typically, the customer can immediately restart the vehicle by selecting Park and pushing the ENGINE START/STOP button.
A23-0082023-11-29. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Typically, the customer can immediately restart the vehicle by selecting Park and pushing the ENGINE START/STOP button.
A23-0272023-08-03. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Typically, the customer can immediately restart the vehicle by selecting Park and pushing the ENGINE START/STOP button.
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.

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