For code 22 check that the black wire off the pressure switch is going to a good ground, I usually use the t-stat ground. The blue wire should be the one run to the ecu (b5 I think) make sure you didn't ground the wrong wire. Tranny oil takes about two quarts. Just make sure the car is decently level and remove the fill plug. If oil is draining out then let it till it stops, if no oil comes out add it till it does, very simple.