The generator matrix

 1  0  0  1  1  1  2  0  1  1 14  1  4  1  1  1  1  1 14  6  1  1
 0  1  0  1  2  3  1  1  8  6  1 15  0 11  9 11  7  9  6  8  6 12
 0  0  1  1  1  4  7  2  6  3  1  7  1 14  4  9  0  5  1  1 10 12
 0  0  0  2  8 10  6 10 10  6  0 12  2  8 12 12 14 14 12  6 14 14

generates a code of length 22 over Z16 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+672x^18+1324x^19+3829x^20+6312x^21+8446x^22+6496x^23+3783x^24+1176x^25+636x^26+52x^27+35x^28+6x^30

The gray image is a code over GF(2) with n=176, k=15 and d=72.
This code was found by Heurico 1.16 in 837 seconds.