The generator matrix

 1  1  1  1  1  1  1  1  1  1  2  2  1  1  2  1  1  4  1  1  1  1  1
 0 12  0  0  0  0  0  0  8  4 12  4  0  8  4  8 12  4  0  8  8 12 12
 0  0 12  0  0  0  0  8 12  0  4  4  4 12 12  0  8 12 12  0 12 12  4
 0  0  0 12  0  0  0 12  8  8 12 12  4  0  0 12 12 12  4  4 12  8  4
 0  0  0  0 12  0  4  4 12 12 12  0  0  4  8  8  4  4  4 12  4 12  4
 0  0  0  0  0 12  4  8  8  0 12 12  8 12  8 12 12  0  4 12  0 12 12
 0  0  0  0  0  0  8  8  8  8  8  0  8  0  8  0  0  8  0  0  8  0  0

generates a code of length 23 over Z16 who´s minimum homogenous weight is 15.

Homogenous weight enumerator: w(x)=1x^0+60x^15+142x^16+258x^17+381x^18+512x^19+887x^20+1636x^21+6763x^22+11392x^23+6786x^24+1728x^25+952x^26+528x^27+344x^28+204x^29+92x^30+52x^31+31x^32+14x^33+3x^34+1x^36+1x^38

The gray image is a code over GF(2) with n=184, k=15 and d=60.
This code was found by Heurico 1.16 in 5.23 seconds.