Threw some codes need help identifing

[Double Dspeed]

So my car was sitting for a week while i was snowboarding. Came home went to start the car and the battery was dead. No big deal jumped it took it for a ride. CEL popped up grabbed my AP and these codes came up p2507, u2516, u2064, u2618, and b1318 anyone know what they mean?

 

[Moonpie.Express]

DTC P2507 PCM B+ voltage low
The PCM monitors the voltage of back-up battery positive terminal at PCM terminal 1BA. If the PCM detected battery positive terminal voltage below 2.5 V for:2 s, the PCM determines that the backup voltage circuit has malfunction.
Diagnostic support note
DETECTION
This is a continuous monitor (CCM).
CONDITION
The MIL illuminates if PCM detects the above malfunction condition during first drive cycle.
PENDING CODE is available if PCM detects the above malfunction condition.
FREEZE FRAME DATA is available.
DTC is stored in PCM memory.
Meltdown EEC fuse
Open circuit in wiring between EEC fuse and PCM terminal 1BA
POSSIBLE
Short to ground between EEC fuse and PCM terminal 1BA
CAUSE
Poor connection of PCM connectorI
PCM malfunction@ PCM


U2516
CAN system communication error
Instrument cluster Information display

U2064
Warning light illumination request signal from other modules

U2618
Wheel unit No.3 (No response)

B1318
- When driving the vehicle at 20 km/h {12.4 mph} or more, low ignition voltage (10 V or less) is detected at the voltage monitor of the solenoid valve or motor monitor.


What I found in the manual. Might want to see if disconnecting the battery and reconnect will help.
Might want to go ahead and replace it. Sometimes when the totally drain like that, they do not want to come back to life.

 

[Frisco speed3]

cold weather probably sucked the life out of your battery, get a new one.