The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  3  0  0  0  0  3  6  6  0  0  3  3  3  3  3  3  3  0  6  0  6  0  6  0  3  6  3  6  6  0  0  6  3  0  3  6  6  0  6  3  3  0  0  3  3  6  6  0  3  6  0  3  6  6  0  0  6  0  3  6  6  3  6  3  0  3  0  3  6  6  6  0  0  3  3  0  3  6  6  6  0  0  0  0  3  3  0  3
 0  0  3  0  0  3  6  0  6  0  3  3  6  6  0  3  0  3  3  3  3  0  0  6  6  3  3  6  0  6  0  3  3  0  6  6  6  0  6  3  3  0  6  6  6  0  3  0  6  0  6  6  6  0  6  0  0  6  6  0  0  6  6  0  3  0  6  6  0  0  3  6  3  3  3  3  3  3  3  3  3  0  0  0  3  6  3  3  6
 0  0  0  3  0  6  6  3  0  3  3  0  0  3  6  3  3  6  6  0  0  6  6  6  6  6  3  3  0  3  6  3  6  6  3  6  3  0  0  0  3  0  0  6  0  6  6  3  0  3  6  6  0  0  6  0  6  0  3  0  6  0  6  6  0  3  3  3  3  3  3  3  6  3  0  3  0  6  6  3  0  0  0  3  6  6  3  0  6
 0  0  0  0  3  6  6  6  6  6  0  6  0  0  6  6  0  3  0  0  6  6  3  6  3  6  0  6  0  0  6  6  3  0  0  0  6  6  0  3  3  3  3  0  6  3  0  0  6  6  0  6  3  3  3  6  0  0  6  6  0  3  3  3  3  3  3  3  3  3  3  3  3  3  0  0  3  0  6  6  6  0  3  6  6  6  3  6  3

generates a code of length 89 over Z9 who´s minimum homogenous weight is 171.

Homogenous weight enumerator: w(x)=1x^0+22x^171+42x^174+60x^177+486x^178+76x^180+30x^183+10x^186+2x^267

The gray image is a code over GF(3) with n=267, k=6 and d=171.
This code was found by Heurico 1.16 in 0.161 seconds.