Purchased our 2021 Jeep Wrangler Sahara 4XE on 7/25 with 231 miles on it, before we hit 500 miles CEL was on. Checked gas cap, checked fuses, all good. Had a code of P04EE. Couldn't get in for service for about a week, took to dealership where we bought it, which is over an hour away and they said that they couldn't find anything wrong, it was probably a "stored" code - asked about a smoke test and was told that wouldn't work as it didn't provide enough pressure, so they reset the code and sent us on our way. The next day - the CEL was back on. Couldn't get in again for about a week, they had the Jeep for 3 days, said they did smoke test and found nothing, so were reaching out to tech support. Tech support got back to them and said it is a Fuel Filler Neck issue that they are aware of and are re-working the part but that it wouldn't be available for a couple months, but they had it on order and would expedite it and to go ahead and drive the jeep until then. What if something else goes wrong that would trigger a CEL and we weren't aware and continued to drive it? No one seems concerned - but it isn't their 50K+.