Ask your mechanic if he has VIDA / DICE. It's usually the best way to start to diagnose issues. It could be several things - e.g. clock spring. I'd guess this is unrelated to the issues you describe.

 

The code needs to be read. If an SAS, Steering Angle Sensor, or clock spring code is displayed, you probably need to replace this part.
There is an internal ribbon cable. From center position, the wheel can turn 3.5 turns in each direction. If the message is intermittent, when you turn almost full lock and the message turns on,
the internal ribbon cable has a broken or open spot. Turning back, it can make contact again and the message turns off. The SAS code will still be there until it is erased. If replacing the SAS,
a calibration reset has to be performed in the ABS, DSTC section. DSTC or Anti-skid calibrate, needs to know the center position of the steering wheel. DSTC keeps track of the steering wheel angle at all times in case of emergency, braking, turning, skidding or any sudden movements. DSTC = Dynamitic Stability Traction Control. If you are going fast, swerve to avoid something and the car starts to roll over, as you go into a roll over type event before the outside tires leaves the ground the ABS/DSTC system has already started evasive action. The ABS knows that the outer wheel speed has slowed in relation to the inner wheel speed. The YAW sensor under the pass seat is an electronic gyroscope. Speed, per the 4-ABS sensors, Steering wheel movement/position and YAW sensor movement has already started to close the throttle plate and apply brakes to the 2 inner tires to try to decrease the rollover event.
The repair work done, has nothing to do with the anti-skid code. The ribbon cable breaks and is it time for a clock spring.
If you do not replace the clock spring, the DSTC roll over protection may not work.
Everything else will work as normal.

 

Thanks folks, I appreciate your help - I'm going to see what my mechanics scanner turns up and take it from there...