I relaced all 4 O2 sensors on my 2004 Disco II only to have more codes come up. They read as follows: P0150, P0174, MIL ON, MONITRS, 3 Inc, Catlyst, Evap, O2 Snsr, 5 Ready, Misfire, Fuel, Comp, Sec Air, O2 Htr.
Thanks for your help.