2014 Civic SI Coupe, aftermarket amp and sub. I did LOC (line-out converter) from the rears into a Alpine m650 powering a JL Audio 12W6.
I thought it was the amp going out, so I replaced the amp and I still have the same problem.
I've also turned the SVC off via the audio settings. (I think...
Audio System (SVC) Volume Fluctuates
The audio system volume fluctuates.
There is a problem with the speed volume control (SVC) software in the audio unit.
2012 Civic EX – From VIN
19XFB2...CE000001 thru 19XFB2...CE039955