Air intake leakage

[Wepe]

The yellow motor lamp came on and the dealer tells me the fault reading says we have an intake air leakage...(Or lambda disconnection occasionally?)
Any idea where to start to look and for what to fix this problem? The engine runs ok so far. I am not 100% sure but the consumption might have gone up a bit.
Any good iedeas?
We talk about a -01 V70 2,4 t AWD

[arejohn]

What are the code(s)?

[Rustpot]

Probably a hose. I had a vacuum line coupling crack in my '01 2.4T. My car wouldn't run though, wild idle, no power, stalled out. It was a small y-joint right where you'd put your right hand to lean into the bay from the front.

Dealer wanted $50 for the labor and $40 for the coupling, hardware store wanted $0.40 for the zip tie. Going strong for a year now.