[eltigre]

First off the TPS uses it's measurements to determine how much fuel to give the engine(it tries to figure out if you are at idle or otherwise)..that particularly is probably your culprit...check Haynes to see how to check it
The knock sensor is there to detect you are detonating and signals to retard your timing so that you can burn fuel more efficiently(also check Haynes)...I'm thinking this is a secondary problem caused by the TPS fault..(be sure you check the subharness for any corrosion, that may be a problem)

The other one is a tranny code, I wouldn't be able to tell you but I don't think that would be causing a fuel consumption problems......