what is the difference between the 0707 and 0510 ecu codes. they appear to be the exact same code unless i am mistaken. i am getting an intermitent check engine light (once every week or two))with 0510 and 0302 always toghther. the most recent time this occured i got the 0707,0510, and 0302 at the same time. were should i start? is it most likely the o2 sensors (0510 and 0707)codes are the causing the 0302 code or is it the 0302 code tripping the o2 codes. my car is a 99 fed spec