Skoda Kamiq Diesel Cold Start Problem

Sounds like a PTC heater issue. I had something similar with my Kamiq. Cold air on startup, error codes, and the engine ran rough until it warmed up. Check the heating element.

How did you confirm it was the PTC heater? Did you check the blower motor or the heating system relay first?

I didn't check the relay. Symptoms were identical, and the error code pointed directly to the PTC heater. It's a common electrical fault on these. I'd recommend getting it checked at a workshop.

Took it to the shop. They confirmed it was the electric auxiliary heater, just as suspected. Quoted 350€, which seems fair. Thanks for the confirmation!