My 2005 accord has a good battery Checked today 13.4 volts.
This happened at least 3 times. I open the door weith the unlock but when I try to start the car NOTHING. IT appers as if the battery has been disconnected. I open hood everything look ok. try again and the car starts. Radio code has te be reset . Car ggod for a couple of days, then the same thing happens.
Can anybody help. Thanks in advance

 

You have a bad connection or cable. Inspect, clean replace what is wrong.