I have a 17 plate 150 manual, coincidently bought from the same dealer as
@Twoguns
Hasn't long gone over 3000 miles and the EML light came on on Monday, just outside Wigan on my way back to Swansea.
Phoned VW driverline and they sent a VW Roadside Assistance van, guy was super knowledgeable, plugged in diagnostics (kicking myself as I can't remember exactly what the error was), something to do with NOx and SCR sensor. But he said he'd seen it a few times and just needed to recalibrate the AdBlue level sensor, which he done and then reset the light. Drove the remaining 230 or so miles with no issues.
The way he explained it was that they use an ultrasonic sensor to detect the level in the adblue tank, as a traditional fuel sensor would be damaged as it's quite corrosive stuff. If the tank has been filled without using a VW adblue bottle (one that screws on to the filler), you risk over filling the tank and begin filling up the filler neck. The van then knows it's using adblue but the level isn't dropping so it panics and throws up an error code that isn't actually the real problem. He pointed out that if you look at HGV's their adblue filler is on level with the top of the tank (no filler neck as such) to prevent the same problem. I'd topped mine up by using the adblue pump at a Shell garage, just waited for the handle to click and thought I was done.
By no means am I saying that this is the same issue as
@Twoguns has experienced, and I really feel for you dude, your patience is outstanding! Just wanted to let people know of my experience.