DTC Confirmation Test

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

NOTE: Before performing test, ensure ambient temperature is 32°F (0°C) or more.

Malfunction is detected when canister purge flow is detected when EVAP Canister Purge Volume Control Valve (EVAP-CPVCV) is closed. Possible causes are:

Defective EVAP Control System Pressure Sensor (EVAP-CSPS).
EVAP-CPVCV stuck open.
Defective EVAP Canister Vent Control Valve (EVAP-CVCV).
Defective EVAP canister.
EVAP system hoses misrouted or plugged.

To set DTC, start engine and warm to normal operating temperature. Turn ignition off wait at least 5 seconds. Start engine and let it idle for at least 20 seconds. If first trip DTC is detected, perform DIAGNOSTIC PROCEDURE .