Service engine soon light on 1998 Nissan Sentra

Hi, I my service engine soon light came on and are showing the codes:P0440 and P1448. This just happened. Can you tell me what these two codes mean. Thank you for your time.

by in Appleton, WI on November 23, 2009
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
3 answers 2 comments
ANSWER by , November 23, 2009
Assuming that you have a 1.6 litre engine. Vehicle Application: 1998 Nissan Sentra 1.6L, Vin A, Eng Des GA16DE Customer Concern: Trouble codes P0440 and P1448. Tests/Procedures: 1. Blow through the canister vent control valve with the key off. It should be easy to blow through. 2. With the ignition switch on, ground the Purple/White trace wire. One should not be able to blow through the solenoid at this time. Potential Causes: Canister Vent Control Valve Tech Tips: The canister vent control valve is a common failure on this vehicle. Diagnostic Codes: P0440, P1448
COMMENT by , November 23, 2009
thanks for such a quick response!!
COMMENT by , November 23, 2009
Please e-mail me at swaths3644@mypacks.net
ANSWER by , November 23, 2009
Common Problems that Trigger the P0440 code: * Missing Fuel Cap * Defective or damaged Fuel Cap * Distorted or damaged Fuel Tank filler neck * Torn or punctured Evaporative System hose(s) * Defective Fuel Tank Sending Unit gasket or seal * Split or damaged Carbon Canister * Defective Evaporative Vent Valve and/or Evaporative Purge Valve * Defective or damaged Fuel Tank * Defective Fuel Tank Pressure Sensor Number P1448 Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled Description Evaporative emission (EVAP) canister purge system - vent control valve malfunction Cause Wiring, EVAP vent valve, EVAP pressure sensor, hose leak/blockage, EVAP canister contaminated, EVAP vacuum cut valve, ECM
ANSWER by , June 28, 2011
where is the canister vent valve located?