MY ENGINE LIGHT IS ON on 2004 Cadillac XLR

WHAT IS SOME OF THE THING THAT CAN MAKE THIS HAPPEN

Asked by for the 2004 Cadillac XLR
this could be 1 of a 100 issues have codes scanned and post so we can adv. auto zone will scan for free but can only access basic obd11 codes
1 more answer
Need trouble codes to help you more.