service engine light, wtf???

[XXplosive990]

k so the other day i got a ses light. i disconnect the battery and it goes off for a while, but comes back after some driving. so i decided to try n read it using the lil thing where u press the gas five times n watever. so i get it to blink n it blinks

2 long blinks, 11 short, 10 short, 3 short. does anyone have ANY clue wat this could be?? n wtf does 11 blinks mean? i thought it was only supposed to blink at the most 10 times