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  0  1  1  0  1  1  0  6  X  1  1  X  1  1  3  X  X  X  X  X  X  1  X
 0  X  0  0 2X X+6  X 2X+6 2X  3  6 X+6 X+6 2X+6 2X  6 X+3 2X+6  X X+6  X 2X  3 2X+3  0 X+6 2X+6  X  X  6  X  3 X+3 X+6  X  3 X+6  6 X+6  6  6  0 2X+6  0 2X  3 2X+3 2X+6  0 2X 2X+6 2X+3 2X 2X+3  6 2X 2X+6  6 2X 2X  0 2X+6 2X  0 2X+6  3  X  6  0  X  6  3  X  X 2X+6 2X  3 2X  0 2X+3  3 2X+6 2X X+6 2X+6  3 2X+6  0 X+6
 0  0  X 2X  3 2X+6  X X+6 2X+3 2X+6  0 2X+6  3 2X  3  X  X X+3 2X  0 X+3 2X 2X+6 X+3 X+3  0  6 2X+6  X  0  3  3 X+6 2X+3 X+3  X 2X 2X  6 2X+6 X+6  0  3 X+6 2X  6 2X 2X+6  3  6  3  6  X X+6 2X+6 X+3 2X+3  6 X+6 X+3  X  0 2X+3 2X+3 2X+3 X+6 2X+3  X 2X+3  6 2X+3 X+6  0 X+3 X+6 X+6 2X 2X+3 X+6  6  X  6  X X+6 X+6 2X X+3 2X+6 2X+6
 0  0  0  3  0  0  0  0  0  0  6  3  6  3  6  6  3  6  6  3  6  6  6  3  3  6  3  6  6  3  0  6  3  0  0  6  3  6  3  0  3  3  0  0  3  0  6  0  0  0  6  3  0  6  3  3  0  6  0  6  3  3  6  3  3  3  6  0  0  0  6  6  3  0  0  6  3  6  6  0  0  3  6  0  6  0  3  0  6

generates a code of length 89 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 171.

Homogenous weight enumerator: w(x)=1x^0+452x^171+126x^172+252x^173+790x^174+306x^175+378x^176+948x^177+540x^178+486x^179+828x^180+414x^181+288x^182+278x^183+72x^184+54x^185+106x^186+74x^189+96x^192+44x^195+18x^198+6x^201+2x^207+2x^225

The gray image is a code over GF(3) with n=801, k=8 and d=513.
This code was found by Heurico 1.16 in 5.08 seconds.