DTC Confirmation Test

WARNING: This page is about a different car, the 2002 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Malfunction is detected when EVAP Canister Vent Control Valve (EVAP-CVCV) remains closed under certain driving conditions. Possible causes are:

Defective EVAP-CVCV.
Faulty EVAP Control System Pressure Sensor (EVAP-CSPS) or circuit.
Blockage in hose to EVAP-CVCV.
Defective water separator.
EVAP canister saturated with water.

Connect scan tool to Data Link Connector (DLC). See Figure . Turn ignition on. Using scan tool, select DATA MONITOR. Start engine. Drive vehicle at about 50 MPH for a maximum of 15 minutes. If first trip DTC is sets, perform DIAGNOSTIC PROCEDURE . If first trip DTC is not set, problem may be intermittent. See TESTING PROCEDURE under SELF-DIAGNOSTIC SYSTEM.