So many codes

So my wife talks me into helping fix a 2001 T4R that belongs to the son of one of her friends. I was told "all the dash light are on" before I headed over. I get there and see the typical teenager vehicle that needs a lot of attention. I won't bore you with the basics like no oil on the dipstick ect. Today I take it to get codes ran and it comes back with a laundry list

P0306-CY 6 Mis
C0210&C0215-rear wheel spd sens
C1201-eng com ctrl
C1223-Anti lk ctrl
C1246-master cyl prs CRT
C1256-accum low press

When I drove it to the parts store I found out just how bad rotors could be warped. I see most of those codes could he related. Obviously I'm going to go over everything when I do the basics, but I figured I'd ask for so direction for the given codes. Any help would be great!

Pic is the codes and basics I found.

 

SR5 2005 runner and never had a code or check engine light come on.
Way to go Toyota.
One AC compressor
3 starters
brake job
oil changes
original tranny fluid 150,000 miles - going to drain and fill a few times WIGARTI
original WP

Isn't the cycl 6 miss a possible link to a blown HG - combustion gas getting to coolant, coolant out tailpipe, Code PO306?