[Brule]

This took me around 2-3 hours to figure out how to do it with different answers out tbere to find and piece together. Hope it makes your day.
This is for dme I8AOS not sure about other dme versions.

This error comes up when using the free jb4 back end flash for single turbos.

The error comes up every few start ups and cant just be deleted by ib4 or mhd ect.

To remove the error you need tuner pro. Its a Free download and plenty of diy on youtube how to use it.
Once you have tuner pro you open the USA JB4 back end flash with the correct .xdf.

Go down to diagnostics, right click on the dmtl, edit xdf, change the number 56 to 00, save it then save bin.

No more DMTL code.

This is only for Australia and Euro models with USA flash.

Video showing how to do it.