Noticed the RPMs increasing at an idle a few nights ago as well as loss of power. ODBii code reader showed P0171 lean fuel code. Changed the MAF sensor. Stared up and ran ok down the street. In park at idle, RPMs go back up to above 2500. New
codes. 0507 ( high rpm's at idle) esc service required, engine service required. Does this sound like a vacuum leak?

 

Had this issue on a 2018 XC60 T5.

Engine check light on and using more fuel than normal, the fix was to reconnect a loose 10mm plastic pipe from engine, to the air intake pipe after the MAF.
The pipe was laying under\behind the air filter and it took a while to find where it went, the connector is hidden underneath the air intake pipe towards the rear.

Hope this helps someone.