Code 700 just means there are codes in the Transmission section of the PCM.
This is from Mitchell ProDemand:
P0882-TCM POWER INPUT LOW
This DTC is set when there is less than 3.0 volts present at the transmission control output circuits located in the Powertrain Control Module (PCM) when the Transmission Control System request the power up of those circuits. Note: Due to the integration of the Transmission Control Module and the Powertrain Control Module, both systems have their own power and ground circuits..
When the ignition is turned from "OFF" position to "RUN" position and/or the ignition is turned from "START" position to "RUN" position.
RELATED TIPM DTCS
TRANSMISSION CONTROL CIRCUIT SHORT TO GROUND
TRANSMISSION CONTROL CIRCUIT OPEN
POWERTRAIN CONTROL MODULE
Friday, June 5th, 2015 AT 12:29 AM