[Johnwmac]

Just looking through threads and nothing really answers my question.

After filling up the adblue tank a warning came up saying there was an adblue system fault. I ran it through ISTA and it says there’s a problem with the active tank. It hasn’t started the shutdown sequence as of yet. But another thing I notice is that the NOX sensor after the cat is showing invalid with a reading of -0.01ppm. Could the NoX sensor be the cause of the problem!?