the "service engine light" is on when the key is turned on on 1998 Infiniti I30

the light stays on even tho it seems to be running smooth
1998 infiniti i30

Asked by for the 1998 Infiniti I30
If you question is why; There are a hundred different reasons for the light illumination. Yours could be from an EVAP issue, and normally does not interfere with the operation of the vehicle. To know for sure of the reason for the light, take it to a chain parts store and they will scan it for free. Doesn't mean you have to buy their parts, then post the code here so we can advise you.