Hi,
This is a common issue with the Picanto 2017 that usually pops up after 25,000 Mileage. It is covered under the warranty and they replace the throttle body sensor for you. Please take it to the Kia Service center in Malabe .I had to wait couple of months for parts to arrrive becasue I got this problem during Covid but do not worry its a very common problem and covered under warranty if youve got the vehicle for Kia Sri Lanka !