Possible Causes
WARNING: This page is about a different car, the 2003 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.
Malfunction is detected when EVAP control system has a leak between intake manifold and EVAP control system pressure sensor. Possible causes are:
- EVAP canister purge volume control solenoid valve stuck closed.
- Defective EVAP control system pressure sensor and/or circuit.
- Loose, disconnected or improper connection of vacuum hose.
- Blocked vacuum hose.
- Cracked EVAP canister.
- Defective EVAP canister purge volume control solenoid valve circuit.
- Defective accelerator pedal position sensor.
- Blocked purge port.
- Defective EVAP canister vent control valve.