I have a 2012 mini cooper clubman s. The check engine light came on and it gave me two codes: 2BC5 Mixture control, Injector aging: Long term adaptation implausible & 2BC0 Mixture control, Mixture too lean. At first I thought it was the upstream 02 sensor but I replaced it and the codes came back after I cleared them. I disconnected the MAF sensor to see if I would get new codes or if the new ones would stay the same. but I did get another code so I crossed out the MAF sensor. I would appreciate any help or suggestions. Thanks!