Honda Odyssey 2018–2020 — technical service bulletin
Bulletin A21-013 · NHTSA communication 10187527 · issued Feb 18, 2021
Technical service bulletin
communication type
Electrical System
component
2018–2020
model years
3
vehicle entries
Official summary
Service Bulletin - A loose connection in the MOST bus network is causing a popping or crackling from the speakers or no sound from the audio system. There may also be a Network Loss message and/or display issues.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.