So kinda interesting. I got the CEL in my 2022 Taos SEL about a week ago and did a scan where it came up with P2421 and 14535 which is a reference for P2421 somehow. Left the light on since I have plans to take it to dealer this week. Today CEL went off. It's been to the dealer once already for the P2421 error and they replaced the valve that everyone mentions but that was about 2 months ago. Anyone else running into this on/off CEL light/valve and these reoccuring error codes?