I had that happen to me after I installed my gtx2860, the DV is on the emissions control fuse. I left the plug for the DV hanging unplugged which I *think* blew the fuse by arch or maybe by water getting in the plug. I put the stock DV back on the plug and zipped tied it out of the way and haven't had a problem since. I'm going to get the car on the dyno tues. Now in you case I'm not sure why the fuse blew...