I have a 03 disco and have recently started having these codes coming up(P0130 and P0171). I replaced the O2 sensor B1 S1, it was still under warranty, and cleared the codes with my scan tool. That didnt fix it. The service engine light keeps coming back on with the same codes. The light comes back on within 5 to 10 miles of driving. Any help with this would be greatly appreciated.