Errors remaining after ABS Module Refurbished

I was getting the trifecta of ABS/DSC lights on the dash along with a multitude of errors, so I sent my ABS module away to get refurbished. The unit was found to be faulty, so was fixed and tested by the company and sent back to me. On plugging the unit in, I had one light remaining, the DSC light in the centre of the instrument cluster.

I read the codes with INPA and have the following stored:

ERROR 91 - STEERING ANGLE MESSAGE ERROR
ERROR 59 - DMER1 CAN MESSAGE ERROR






From some searching online I found that it may just need the steering angle sensor recalibrated, so I made sure the wheel was straight and then used TOOL32, ran the DSC57 group file and ran "Test_Lenkwinkel", which from my understanding is supposed to reset and write the calibration. TOOL32 reported that this ran successfully, however the errors still remain.

The car seems to have heavy steering as a symptom to this, whereas I'm pretty sure the steering was fine before this module was sent away. They returned the same unit also, so as far as im aware there shouldnt be any coding as such required again?

I had a look in INPA and I couldnt see any data being returned to the ABS module for the steering wheel angle when I was turning the steering wheel with the engine running.

Is the DSC module still potentially faulty or is there something else I need to do to clear these errors / calibrate this sensor?

Thanks.