2004 honda accord v6 at fuel consumption issues

[triplextreme2]

well i ended up buying a used service manual and an going to try and find out if i can reset the pcm my self because im a a loss honda says the fuel trim is normal nothing with the engine ,cars lifted to normal i mean the only think i can think is that v6 hates me because i only maybe put 6 miles a day on it lolor honda’s lying hoping i’ll break some thing and there get to fix it which i dont believe . one question i do have is do the scan tools actually know if the o2 sensor are really working or is it a quick test it runs ?maybe a clogged cat car does stink if i lay on it hard for a while .some day maybe i need to swap it to a 5 spd turbo diesel engine there i’ll get the good mpg.