The generator matrix

 1  1  1  1  1  1  1  1  1  2  1 12  1  2  8  0  2  8  1  2  1
 0  2  0  0  0  8  8  8  8  2 10  2  6 12  4  2  2 12  2  8  4
 0  0  2  0  0 12  6  2  2 10  6 12  0  2 12  2 12 12 14  6 12
 0  0  0  2  0  6  6  6  4 12 12  4  6 10  2 12 10  2  2  2  6
 0  0  0  0  2  2  4  6  2  4 12  6 14  8 12 14 14 10 10 14  4

generates a code of length 21 over Z16 who´s minimum homogenous weight is 15.

Homogenous weight enumerator: w(x)=1x^0+162x^15+684x^16+1534x^17+3446x^18+7048x^19+12091x^20+15160x^21+12606x^22+7346x^23+3287x^24+1310x^25+586x^26+196x^27+65x^28+12x^29+2x^30

The gray image is a code over GF(2) with n=168, k=16 and d=60.
This code was found by Heurico 1.16 in 13.7 seconds.