2018n Cruze engine light on and high idle, connected?

What is your question?

This is the second time the engine light has come on in about 3 years time. first time it came on I had it checked and the code was catalytic converter fail. But the light went off on its own and was fine for almost a year. had car oil changed and tires rotated and it came back on a few days after the service. could this be a glich? why would it say cc fail and then be fine? it makes no sense. the engine idle runs high when i first start the car, is it related?

What makes this problem better or worse?

engine light seems to go on after the car is serviced..second time this happened. i notice its running a little rough and then it idles high.

How long has your 2018 Chevrolet Cruze had this problem?

A few days