Are you referring to this valve cause it has three hoses or there is another farther down attached to the shrowd but has no electrical connector just hoses... also how likely that something has come loose at the charcoal canister in the rear? It seems pretty well protected

Yeah yeah sorry meant vacuum booster, I’m not so much worried about that one but the other codes are the ones that are getting to me. Thanks for the reply!

Ive got a 2003 S80 T6 that I'm currently working on and am having trouble with some diagnosis of a problem. Ive got three OBD codes showing up that I am chasing and don't want to be a parts slinger! Ive got P0573 (should be the brake switch on the MC), P0447, and P2400. More than likely the 0447 is ...