Well I'm not familiar with accords, but hopefully this will help a little. . .

P0302: http://www.engine-light-help.com/P03...ine-light.html

P1399: http://www.2carpros.com/trouble_code...1300-P1399.htm

P1519: http://www.civicforums.com/forums/17...t-failure.html

hope this gives a little insight to help with your problem. . .