If I were to hazard a guess, and it is most definitely a guess, there is a bit in you ABS Module (Byte 23, Bit 7) that I have seen labelled as "DSR", That might be where the error is coming from.
You can try deselecting that bit, clearing codes in the ABS module, and see if that solves your issue.
I did have an error in 03 ABS for DSR error.... But the place to change it is in 44 steering. I cleared the fault in 03 brakes and it did not come back after turning on DSR in 44 steering.
Hope that clears things up for someone else....
I had no fault showing in 44 steering too....