My Passat is showing a P0112 code and running rough on 2003 Volkswagen Passat

Where is the intake air sensor located

Asked by for the 2003 Volkswagen Passat
This should gine you the idea. You may be able to remove and clean and not have to replace :;_ylt=A0PDoS4FghlRckYA6tqJzbkF;_ylu=X3oDMTBlMTQ4cGxyBHNlYwNzcgRzbGsDaW1n?
or it may be a circuit issue. i agree clean 1st then test circuit if issue is still there
Thanks very much!