Hey, I’ve replaced the head unit but it didn’t come with a code. I’ve tried several to no avail so far. Can anyone help me out?

It’s a 2008 Civic LXS
VIN is 93HFA15308Z601864

Head unit info is:
39100-SNJ-M000
PH-2679C
SERIAL NO. CLJEKA640008938
MANUFACTURED ECL C6 E 29