I am having the same prob. I had my light come on n off since 36k warranty. The code comes as catalyst converter prob which is covered upto 80k. Before replacement the dealership just wanted to update the software. I did that. It went off. A month later.. the light is back on. 3 days after and now at the service.. off again. The code is coming out same (was told. Need to see to confirm) but the dealership now thinks it's the fuel injector and may need to replace... BUT i was informed from looking online that it is not under power warranty (80k) I think this is crazy and should be a manufacture recall!!!! Yes.. this is happening to a fairly new 2016 we all want to enjoy! So frustrated. Advice please.