The generator matrix

 1  0  0  1  1  1  X  1 X^2+X  1  1  1 X^2 X^2+X X^2+X X^2  1  1 X^2+X  1  1 X^2+X  1  0  1  X  1  1 X^2  1  1 X^2  1  1  1  1  X  0  1  1  1  1  1  1  1  1  1  1
 0  1  0 X^2 X^2+1  1  1  0  0 X^2 X^2+1  1  1  1 X^2+X  X  X X^2+X+1  1 X^2+X X+1  1  X  1  0  1 X^2+X+1 X^2+X  1 X^2+1 X^2+X  1 X+1 X^2  1 X^2+1  1  1  1 X^2+X+1 X^2+1 X^2+X+1 X+1 X^2+X+1 X+1  1 X^2+X+1 X^2+X
 0  0  1 X^2+X+1 X+1 X^2 X^2+1  X  1  1 X^2+1 X^2+X  X X+1  1  1  X  1  X X^2 X+1 X^2  1 X^2+X+1 X^2+1 X^2+X+1  X X+1  1  0 X^2+1 X+1 X^2+X+1 X+1 X^2+X+1  1  1  1 X^2+1  0 X^2+X+1 X+1 X^2+1 X^2+X  0 X^2+X X^2+1 X^2+X+1

generates a code of length 48 over Z2[X]/(X^3) who´s minimum homogenous weight is 46.

Homogenous weight enumerator: w(x)=1x^0+248x^46+124x^48+80x^50+56x^54+3x^64

The gray image is a linear code over GF(2) with n=192, k=9 and d=92.
As d=93 is an upper bound for linear (192,9,2)-codes, this code is optimal over Z2[X]/(X^3) for dimension 9.
This code was found by Heurico 1.16 in 53.8 seconds.