c5x7 Mixer butterfly position copy signal

[morto]

Hi all any help before I look at the mixer butterfly, was driving to work yesterday and got the DPF warning light and engine management light on, now the other day my wife said there was a funny sound from the front of the engine like a squeaking sound, and now I realise its the mixer butterfly ive scanned it with Digibox and no surprise to see , P2111 PO487, P1161, mixer butterfly copy signal, so whats the best thing to do , there is no limp mode and car drives as it should , just had a quick look and noticed a noise sounds like a solenoid trying to open or close, ok got the part off and its the throttle body with the butterfly in it, and rattles


Thanks
Andy