[sowise]

I can't say about the code but as far as your operation I had a similar problem where the seat belt will move when you open the door but will not retract. I found that when I turn the key on or shut the door if you wiggle the upper buckle it will catch and retract. I may get one or two full functions out of it before it gets stuck again. I am wondering if your problem is that your buckle isn't making it to the fully open position to close the switch (haven't checked the schematics to see if this is a normally open or a normally closed switch but guessing it is n/o and closes on contact). So if it doesn't see the buckle at full open or full closed position it doesn't know where to go probably generating the code 16 for open sensor (thinks it should be closed). I would check your track for interference as someone else suggested, possibly spray in some lube (careful not to stain your headliner). Maybe someone else has other ideas though.