Honda Passport 2019–2020 — technical service bulletin
Bulletin A21-012 · NHTSA communication 10187526 · issued Feb 18, 2021
Technical service bulletin
communication type
Equipment
component
2019–2020
model years
4
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. You may also see a Network Loss message and/or display issues.
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.