[TomHen]

If you're still having this problem please take a look at Honda TSB #A18-085 relating to FM audio cutting out when using the right turn signal. I have the same problem and I was able to verify that this is the cause. I have not contacted the dealer yet so I don't know if they will fix for free. Hope this helps.

https://static.nhtsa.gov/odi/tsbs/2018/MC-10144793-9999.pdf

Did you have this modification done and did it correct the problem you were having?