Service bulletins for the 2023 Honda Accord
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.
118 on file from NHTSA, as of 2026-10-19.
About U1803 on the 2023 Honda Accord: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: U1803 are shown. Show all
| A23-043 | 2023-05-31. Service bulletin. ELECTRICAL SYSTEM. Service Bulletin - Some customers experience the following errors: DTC U1803 and Code TT06. A software issue is causing an internal Ethernet error in the CAN Gateway Unit (CGW). |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.