Possible Causes

EVAP control system incorrect purge flow malfunction is detected when under normal conditions (non-closed throttle), sensor output voltage indicates pressure drop and purge flow are inadequate or if 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.
• EVAP control system pressure sensor and the circuit.
• Loose, disconnected or incorrect connection of rubber hose.
• Blocked rubber hose.
• Cracked EVAP canister.
• EVAP canister purge volume control solenoid valve circuit.
• Accelerator Pedal Position (APP) sensor.
• Blocked purge port.
• EVAP canister vent control valve.
• Faulty ECT sensor.