I recently purchased a special fuse for the cags bypass which i thought would be easier than the bypass plug for the trans. it just replaces the standard fuse in the fusebox.It worked great the first time out which was only about 50 miles. the second time last weekend i drove about 60 miles to a show and when i got ready to leave the check engine came on and stayed on.I didnt think to check that fuse so i took it to the dealer and said that fuse had blown and gave a code for the check engine light to come on.The only thing i did differant was when waiting to park te car at the show we were waiting on a steep hill and i just used the emer. brake to hold the car while we were waiting to be parked.I dont think that had anything to do with it but i dont know and the dealer couldnt tell me why it blew either