Peugeot 208 Crankcase Ventilation Issue

I had similar symptoms on my 208. Reduced power and emissions light. Have you checked the crankcase ventilation valve? That was the problem for me.

Thanks for the input! Was the valve obviously defective, or did you need some special diagnostic to detect the problem?

No, not obviously defective. The garage said it needed replacing. I'd suggest getting it checked at a workshop if you're not sure.

Thanks, I took it to a local workshop. They confirmed a crankcase ventilation issue and replaced the valve. Cost me 360€. Runs great now!