codes can anyone help

i just ran a code puller on my car i got 77 ,74 and maybe 42 my friend said 42 came up but i didnt see it but 77 and 74 for sure i anyone can help id really appreciate it .thanks

42=Hego(O2 sensor) circuit indicates system rich on right side.
74=BOO brake-on/off circuit falure--not actuated during test.
77=Breif WOT not sensed during self test/ operator error.

I almost always get 74 & 77 because I don't get to the brake or do the WOT in time. Not a biggie. 42? Hmmm something causing O2 sensor to show as rich setting in that side. Not always the O2 sensors.

Run them again. Check for 42 to make sure.

The 74 & 77..you have to hit the brake pedal and do a breif Wide Open Throttle shortly after the first set of codes...I Think, read the instructions...Like I said, I always screw up on that part.