Throwing codes P043E, P043F, P2401, P2402, P2419

[06 Yaris]

Hi all, I have these same codes on my 06 hb. (285,000 km, sometimes top it off, but the canister is dry & fills easily. We do not see or smell any gas leaks).
System does not hold a vacuum & leaks pressure at the filler cap (1 psi).
How much pressure should the system be able to hold?
Gas cap vacuum valve will hold aprox 2-3"hg.

First thing I checked was the purge valve in the intake system, it was open. During testing it closed & I have rechecked it and it was still closed.

Then pres tested gas tank. sprayed everything with soapy H20. Only leak I found was the gas cap seal. ( looks like it Is not mean to hold psi).

Vac tested entire system & will not hold anything.
Does any body have any answers? or knowledge or manual for indepth testing?
Any help would be appreciated, Jason