I think i have little problemwith my Rcz. TODAY it startet to go In Safe Mode or something like that very slow accelaration with 2 Faultycode : (P0131)heated oxygen sensor 1,bank 1 low presure and (P0171) system to lean bank,1 i have checked and cleaned all airtakes airfilter sparkplugs etc everything.. i have take the bank,1 o2 sensor out (it was very dirty and black) cleaned and put it back.. then i resetet or delete the fulty codes and the car was like a new but just for 45 min.. and then i once again have recived the same P0131 code but without P0171 hmm.. i dont know what to thing if somebody can explain this i will be very Thankful thanks guys! And Happpy Eastern