Typical Malfunction Thresholds

"Saturated" indicates EVAP pressure change is less than 0.75 mmHg (0.1 kPa) for 30 seconds.

1. P0455: EVAP gross leak
   TYPICAL MALFUNCTION THRESHOLDS (EVAP GROSS LEAK)
   
   

   All of the following conditions are set
   EVAP pressure when leak check	More than 0.02 inch leak pressure x 0.2
   EVAP pressure when leak check	Saturated
   Vacuum introduction time	Within 12 minutes

2. P0456: EVAP small leak
   TYPICAL MALFUNCTION THRESHOLDS (EVAP SMALL LEAK)
   
   

   All of the following conditions are set
   Vacuum introduction time	Less than 12 min.
   FTP when vacuum pump is ON	Less than 0.02 inch leak pressure x 0.2
   EVAP pressure when leak check	More than 0.02 inch leak pressure
   EVAP pressure when leak check	Saturated