ok guys i decoded my check engine light manually and this came out

alrite bro i found it and i did the thing with the paper clip
the first time the light did 7 blinks
second time 9
then i wait a lil longer and the light stayed on for few seconds and began again
this time was
first 4 times
second 7 times
third 9 times

I read the manual and it says that the code 4 is the CRANKSHAFT POSITION 9CKP SENSOR)
7 is the THROTTLE POSITION SENSOR (TP SENSOR 0
9 is THE NO.1 CYLINDER POSITION (CYP SENSOR)

NOW MY BIG QUESTION IS CAN ANYONE TELL ME HOW TO FIX THIS SENSORS ???????thanks a lot