The generator matrix

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

generates a code of length 18 over Z16 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+198x^12+448x^13+1184x^14+3240x^15+6482x^16+13752x^17+14984x^18+13648x^19+6472x^20+3312x^21+1232x^22+392x^23+156x^24+24x^25+8x^26+2x^28+1x^32

The gray image is a code over GF(2) with n=144, k=16 and d=48.
This code was found by Heurico 1.16 in 8.39 seconds.