2002 jeep grand cherokee laredo check engine light comes on?

A check engine light on a 2002 Jeep Grand Cherokee Laredo can indicate various issues, ranging from minor to serious. Common causes include problems with the oxygen sensor, catalytic converter, or issues with the fuel system. It's advisable to use an OBD-II scanner to retrieve the specific trouble codes, which can help pinpoint the problem. If you're unsure, consider taking the vehicle to a professional mechanic for a thorough diagnosis.