Hello, Two codes appeared on my truck about a week ago. P0401 and P20BA I also get a warning message on the DIC, 'Low Exhaust Fluid' range 705mi. I filled the tank with DEF and did a visual on the wiring coming from the DEF tank. Should I just clear the codes and see if they reset or should I take it in? I plan on taking the truck for a blowout drive (about 4hrs) on Monday. What are your guys thoughts? Thank You!