Possible Causes
WARNING: This page is about a different car, the 2002 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
Malfunction is detected when EVAP control system has a very large leak, or EVAP control system does not operate properly. Possible Causes are:
- Fuel filler cap remains open or fails to close.
- Incorrect fuel tank vacuum relief valve.
- Incorrect fuel filler cap.
- Foreign matter caught in fuel filler cap.
- Leak in line between intake manifold and EVAP-CPVCSV.
- Foreign matter caught in EVAP Canister Vent Control Valve (EVAP-CVCV).
- EVAP canister or fuel tank leaks.
- Leak or blockage in EVAP purge line.
- Blockage in EVAP Control System Pressure Sensor (EVAP-CSPS) hose.
- Defective EVAP-CVCV or circuit.
- Defective EVAP-CPVCSV or circuit.
- Defective Fuel Tank Temperature (FTT) sensor.
- EVAP-CVCV "O" ring missing or damaged.
- Defective EVAP-CSPS.
- Defective refueling control valve.
- Leak in On-Board Refueling Vapor Recovery (ORVR) system.