Malfunction Threshold

The EVAP leak check module pressure sensor value is less than -3.8 kPa (-29 mmHg, -1.12 inHg) for at least 6.0 seconds.

Possible Cause 

NOTE:  The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

• EVAP canister purge valve open stuck
• Fuel purge hose failure