1998 Nissan Sentra Check Engine Soon" light came on

The “check engine” light will “light” when there is a malfunction in the engine management system. The fault code is then stored in the computer. You can buy your own scanner and clear the codes when the failed parts are replaced. The computer must be scanned to retrieve these stored faults to pinpoint the malfunctioning component. Because the check engine light indicates something is wrong, a trip to you neighborhood automobile service center sooner rather than later is recommended.