2012 3500HD Diesel with check engine light Code is P2BAD

Maserati Coupe P2BAD Engine Error Code p2bad W461 G300CDI DTC P2BAD EDC light flashing Hello, Lately I have a EDC light flashing situation which I cannot solve The only DTC code I got p2bad The trouble code P2BAD can be elucidated as NOx Exceedance

p2bad Repair Information for P2BAD GMC code Learn what NOx Exceedence