Possible EGR??

2002 Eclipse GS 2.4... Check engine light on and giving me 2 codes.. cant rem the numbers but one is large fuel leak which i changed the gas cap twice and dont see any fuel leaking anywhere the other is the exhaust leak before the rear o2 sensor i have replaced both o2 sensors and it wont go away dont feel any or see leaks unless its the convertor which i hope its not i cant figure it out.. any help is highly appreciated.. this is my daughters car which has a dead tag now cause they wont pass it through inspection with this light on... Thanks again