need help with codes,p0155,p0110,p0100,p0105,p053(abs)

need help with these codes, I recently bought my wife a 99 v6 galant es
p0155----(02 heater circuit 2nd bank sensor 1)likely closest to rad. on exhaust manifold what do you thing?
p0110----(Intake air circuit problem)kinda clueless? any ideas?
p0100----(MAF circuit)any ideas?
p0105----(MAP bravo sensor) any ideas?
p053-----(ABS malfunction hydraulic unit)had my mechanic run all of these codes just for shits and giggles and I am going to attempt to fix them all ... before you guess this one he said he checked the speed sensors and they were ok? any ideas?he also said he only checked two, lol. half ass mechanics, this is why I fix things myself. Any ideas would be greatly appreciated.

once again any suggestions would be helpful