Diagnostic Test

1) DTC IS ACTIVE
NOTE: If DTC P0455-EVAP SYSTEM LARGE LEAK is set along with this DTC, perform the diagnostic procedure for P0455-EVAP SYSTEM LARGE LEAK before continuing with this test.

NOTE: Do not replace the gas cap for DTC P0457-EVAP SYSTEM - LOOSE FUEL CAP.

With a scan tool, select View DTCs.

Is the status Active for DTC P0455-EVAP SYSTEM LARGE LEAK along with this DTC?

Yes
1. Perform the diagnostic procedure for P0455-EVAP SYSTEM LARGE LEAK .
No
1. No repair is necessary. Verify that the gas cap is in place and tight. Clear DTCs and reset the odometer or message center display.