Seat Alhambra AdBlue issue

I had a similar issue with my Alhambra. The error message popped up, and the engine refused to start after a while. It could be a faulty AdBlue injector or a clogged diesel exhaust fluid line. Have you checked the AdBlue injector for any blockages or leaks? What's the tank capacity supposed to be? Maybe it's not reading the level correctly.

Thanks for the quick reply. I haven't checked the injector yet, but I suspect the AdBlue output from the tank itself. Is there a way to confirm this without specialized tools? And did you also have an error stored in the error memory?

Yes, I also had an error stored. If you suspect the output from the tank, it's tricky to diagnose without proper tools. But if you're confident, you could try checking the lines for any visible damage or blockages. In my case, it turned out to be a faulty pump in the tank itself. Honestly, given the symptoms, it might be best to take it to a workshop with the appropriate diagnostic equipment. They can check the SCR catalyst and the entire diesel exhaust injection system properly and pinpoint the exact cause. Don't ignore the service light, or you'll risk further damage.

As suspected, the AdBlue pump was faulty. I have replaced it, and the system is now functioning correctly. Total cost was 250€ including the pump and labour.