The generator matrix

 1  0  1  1  1 X^2+X  1  1 X^2+2  1  1 X+2  1  1  2  1  1 X^2+X+2  1  1 X^2  1  1  X  1  1  X  1  X  0  X  X X^2+2 X^2+2  1 X+2  X  1  X  1  X  1  1
 0  1 X+1 X^2+X X^2+1  1 X^2+2 X^2+X+3  1 X+2  3  1  2 X+3  1 X^2+X+2 X^2+3  1 X^2 X^2+X+1  1  X  1  1  0 X^2+X  2 X+1 X^2+X+2  X X^2 X+2  X  1  3  1  0 X^2+2 X^2+2 X+2 X^2+X X^2+X+3  2

generates a code of length 43 over Z4[X]/(X^3+2,2X) who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+109x^42+54x^43+52x^44+32x^45+1x^46+2x^47+5x^48

The gray image is a code over GF(2) with n=344, k=8 and d=168.
This code was found by Heurico 1.16 in 0.015 seconds.