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Home >> Jeep >> 2007 >> Commander Base, 4.7 P, AWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0325 To P0501 >> P0457-Loose Fuel Cap >> Diagnostic Test

Diagnostic Test

  1. 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 PURGE 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 PURGE SYSTEM LARGE LEAK .

    No 

    1. No repair is necessary. Verify that the gas cap is in place and tight. Clear DTCs and follow the directions outlined in the service information under Instrument Cluster on resetting the odometer or message center display.
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