Chosen Solution

Hi we’re is the MAF sensor located on my Volvo C30 r design 1.6

@cripper the mass air flow sensor (MAF) is located inside the intake system (green arrow)

Information from here and contains a good write up on how to fix it.

The mass air flow sensor is typically located on the air intake bellows or somewhere in between the air filter box and throttle body. I don’t know your specific vehicle but based on the principle of how the MAF sensor works, it should be there. Usually they are easy to spot as they are cylindrical or somewhat square in shape, about the size of the intake bellows, and will have a wire connector plugged into it.