help with engine codes

ihave a 2002 sohc and i got the codes p1684 and p0700 what do these mean and what do i have to do to fix it?

ihave a 2002 sohc and i got the codes p1684 and p0700 what do these mean and what do i have to do to fix it?The P1684 is, "battery disconnected within the last 50 key-on cycles." Nothing to worry about. The P0700 is, "Transmission Control System Malfunction."

Transmission solenoid pack is bad/going bad.

Part#5015646AC $180 (unless you're under warranty)

Welcome to the world of the A604 (41TE) 4-speed electronic transmission.

this is what autozone told me, the pcm has received a signal to turn on the malfunction indicator lamp from the transmission control system and the p1684 code said, metering oil pump temperature sensor circuit malfuntion

this is what autozone told me, the pcm has received a signal to turn on the malfunction indicator lamp from the transmission control system and the p1684 code said, metering oil pump temperature sensor circuit malfuntionI don't believe anything that the autozone droids tell me...I believe people real life experiences.