Codes and not all the time
I have a 2016 vw tiguan and
when I'm driving it will start
jerking and bucking real violent
then the epic light comes on and
it through a p087 code which is
low fuel pressure to the fuel rail
well this started when I hooked
up a bigger amp to my stereo
could that actually be the cause
that the amp is drawing to much
power and causing other thing
not to work properly.
If you wired it wrong the fuel pump may not be getting enough power. Disconnect the amp and see if the problem goes away.