After erasing code PO340 Cam position sensor the code stayed away and the Lamda light was still on!!!.......i didn`t like my new scanner so i returned it and bought a cheaper one which covered more models!!....the cam sensor code was still there on it`s own...so off i goes and get`s a new one from Volvo £138...put it in and straight away the lamda light went out ...re-scanned and no codes at all....has been like this for a few days now so i think we are there?.....The car starts instantly as well, hot or cold which it never did before....Remember dearest is not always the best (The Scanner).........