help whit this three codes on 2002 sentra se-r spec v

[jccz28]

hello evryone i am new here and recently purchased a 2002 se-r specv i got a lil problem whit it i got these 3 codes p0441 p1448 p0455 ,i looked online and i cleaned the purge valve but no luck i checked for power to the valve its got it any body know what else i can check before i replace it ,also does any body know if the valve is soupposed to be open or closed when its unplugged any help would be appreciated oh yea i also already replaced the gas cap thanks

[audtatious]

Welcome to NICO

P0441: EVAP control system incorrect purge flowEVAP control system does not operate properly, EVAP control system has a leak between intake manifold and EVAP control system pressure sensorPossible Causes:- EVAP canister purge volume control solenoid valve stuck closed- EVAP control system pressure sensor and the circuit- Loose, disconnected or improper connection of rubber tube- Blocked rubber tube- Cracked EVAP canister- EVAP canister purge volume control solenoid valve circuit- Accelerator pedal position sensor- Blocked purge port- EVAP canister vent control valve

P0445: EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

P1148: CLOSED LOOP CONTROLThe closed loop control function does not operate even when vehicle is driving in the specified condition.Possible causes:- The heated oxygen sensor 1 circuit is open or shorted.- Heated oxygen sensor 1- Heated oxygen sensor heater

http://www.nicoclub.com/FSM/Sentra/2002/ec.pdf