well, Hi every body!!
Ilove this site as much as I love my sc 400 .
Any way i had the same problem last year,and the dealer told that they need to shut down the whole system to find out the reason for this, and it's gonna cost me a lot.
I found the solution by my self : I looked in the engine (next to the belt on the upper left side), I saw a small black wire comming from the inside and going back inside again : It was badly scratched by the belt. All I did is just taping it and tha's it.
good luck :)