I can't help with your error code, but have had a problem with my machine this week . The bobbin kept jumping in it's housing. It was fine when full, but as soon as it neared empty the problems started and the stitching was awful. I have cured it though - I tightened the tension screw on the outside of the housing by a small amount, it had worked loose. I have had no further problem. Something to check with yours?