Hi Guys... I took out my car's ecu to take it to have it chipped. The guys at the performance shop said they couldn't get to it until next week, so I brought it home plugged ever thing back in and now it won't start. It's an automatic transmission and one thing peculiar is that even the the car is in park, the D4 light flashes continually. Can anyone help?

 

Do not get your automatic Accords ecu chipped. You are going to have a world of problems and are not going to make any more power.
-PHiZ

As for your problem, I'd check a helms manual. Very odd.