We had a lot came in with the same trouble .. Honda Canada were replacing ECM's and centrifugal clutches , the product update expired in June but it's possible your Honda dealer .. If it isn't flashing a code then it's not the angle sensor , it's possible it may clear up if you re-initialize the ECM ..
Here's the front page from the Honda ECM update ..
When the picture opens click again for full size .

Here's the front page from the Honda ECM update ..
When the picture opens click again for full size .
