Hi,
I've had these, and they all relate to the sensors before (1274,1284) and after (0138, 0154) the cats. Have you got high-flow, or no, cats?
I cured most of them by replacing the sensors but that is very expensive and unnecessary if you have HFCs or removed them altogether, in which case you need an engine map to ignore them.
What age of car and mods do you have?