Possible Causes

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.