Possible Causes
WARNING: This page is about a different car, the 2002 Nissan Maxima and 2002 Infiniti I35. 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 small leak or 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 in fuel filler cap.
- Leak in hose between intake manifold and EVAP-CPVCSV.
- Foreign matter in EVAP Canister Vent Control Valve (EVAP-CVCV).
- Leak in EVAP canister or fuel tank.
- Leak or blockage in EVAP purge line.
- Leak or blockage in hose to EVAP Control System Pressure Sensor (EVAP-CSPS).
- Defective EVAP-CVCV or circuit.
- Defective EVAP-CPVCSV or circuit.
- Defective absolute pressure sensor.
- Defective fuel tank temperature sensor.
- Missing or damaged EVAP-CVCV "O" ring.
- Defective EVAP-CSPS.
- Defective fuel level sensor or circuit.
- EVAP canister saturated with water.
- Defective water separator.
- Defective refueling control valve.
- Leak in On-Board Refueling Vapor Recovery (ORVR) system.