It seems like my tranny went into the failure management mode with harsh engagements. Codes are 334 and 619. It also has too much fluid in it. Is there an easy way to get some fluid out without dropping the pan? Thank you.

take a long suction hose (with some sort of cheepo hand pump)and stuff it down the filler tube. we do that all the time on tranny services when we put a little to much in(only with shop air driven pump,works way better)

did you look up the codes for an explamation ?