One problem related to service engine light on has been reported for the 2015 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Jeep Grand Cherokee based on all problems reported for the 2015 Grand Cherokee.
I got a service engine soon light. When I took it to the dealer they said it was purge valve on the evaporator system. I encounter the same problem on my 2014 Dodge durango at the same mileage. I think Chrysler has a systemic problem with this part of their emission system.