P1599 - Engine Stall or Near Stall Detected
P1362 - IC Cylinder 2 Not Toggling After Enable
B1552 - Keep Alive Memory (KAM) Error
B2710 - PASSKey Open/Shorted Pellet
B2711 - PASSKey Open/Shorted Pellet After Good Key
B2780 - Wrong Resistor Before Good
B2781 - Wrong Resistor After Good
1599 is self explanatory.
1552 is probably from pulling battery power.
The others all have to do with the Passkey security system. Try a spare key first. Maybe just a bad key resistor (pellet). If that doesn't help, it may be in the lock cylinder wiring.