Talisman AdBlue Error and Engine Won't Start

I have a Talisman too, and experienced something similar. The error message and engine non-start are classic symptoms. When you refilled the tank, did you ensure the correct Diesel Exhaust Fluid (DEF) fluid was used? And has the service light illuminated?

Yes, I used the correct DEF fluid, as specified in the manual. The service light is illuminated. Was the AdBlue output the cause of your issue as well?

It was indeed the AdBlue system that gave me fits. I would advise you to seek professional assistance; it appears the Selective Catalytic Reduction (SCR) catalyst system might be the problem. If you continue to ignore it, it might worsen your fuel efficiency. Better take it to a workshop.

Thanks for confirming my suspicions and offering your advice. I'll schedule a workshop visit immediately to address this. Hopefully, I can prevent further damage. I appreciate your help!