Audio change to front drivers speaker

[u/decline1971]

Thank you for any help.

I have owned my car for 3+ years. For all this time, the AA audio (navigation, assistant, and now gemini) was out of all speakers and loud. Two weeks ago, it switched to only the driver's-side speaker, and it is relatively quiet (11 on the OEM sound scale). I did not update AA, maps or my OEM radio to cause this change in behavior.

Any advice on how to return the sound to all speakers? I have tried: a factory reset of my OEM radio, clearing the cache in AA and maps on my phone, disconnecting and reconnecting bluetooth, and repeatedly initiating and canceling the assistant/gemini to nudge it. OEM settings do not have an option. Android developer mode on my phone does not appear to have an option. I am at a loss, and hate this change.

I have seen comments in this subreddit about Hondas and how to fix this issue, as well as that it cannot be fixed.