I figured out my problem with the engine light coming back all the time is that my car's computer is messed up. At this point my car acts normal besides the light that comes back after the reset. Is there a way to reset the computer, update it or does those aftermarket Piggyback systems or Stand Alone's can adjust the setting and fix the problem? My car's computer is thinking that the air/fuel ratio is not balanced if your wondering what is making the light turn on.

 

A store such as Autozone may check the SES light for you, but doubt if they will "clear" it. A mechanic can clear the light. Problem is if you do not fix the source of the problem the light will come on again.

 

It cant be a computer having problems? I swapped out the sensors like twice already and the light seems to come back up about the same time both times when it came on.

 

OBDII (which generates the SES lights and codes) is a good warning tool and a generic diagnostic tool. It makes a "best guess" at the problem. For more detailed diagnostics Nissan will troubleshoot with CONSULT.

 

Im guessing theres a small problem with it then. Back to troubleshooting.