I have a 2001 civic lx that looses power quickly, for ex. I was driving on the hwy and the car basically shut down. check eng. light came on, green key was flashing and car was stalled out. After about 20 min batt. went dead. Had it towed to Honda and they said no code in the computer cause it reset. They charged up batt. and the car ran fine for 4 days and then did the same thing again. Honda doesn't seem to know what it is. Does anyone have any ideas?

thanks marc