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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (2.4L - DTCS P0443 To P1593) >> Diagnosis And Testing >> P0457-Loose Fuel Cap >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
  1. ACTIVE DTC 
    NOTE:

    If DTC P0455-EVAP SYSTEM LARGE LEAK is set along with this DTC, perform the DTC P0455 diagnostic procedure before continuing with this test.

    1. Using the scan tool, perform the ESIM FORCED MONITOR TEST. Allow the test to complete.
    2. Using the scan tool, read DTCs.

      Is the DTC Active or Pending at this time?

      Yes 

      • Go To  2

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
  2. FUEL FILLER CAP VISUAL INSPECTION 
    1. Remove the Fuel Filler Cap and visually inspect for the following:
      • Loose or missing Fuel Filler Cap or seal
      • Damaged locking tabs on the Fuel Filler Cap and/or filler tube
      • Damaged seal points on the Fuel Filler Cap and/or filler tube

      Were any problems found?

      Yes 

      No 

      • Go To  3
  3. FUEL FILLER CAP 
    1. Reinstall the Fuel Filler Cap.
    2. Using the scan tool, perform the ESIM FORCED MONITOR TEST. Allow the test to complete.
    3. Using the scan tool, read DTCs.

      Is the DTC Active or Pending at this time?

      Yes 

      • Replace the Fuel Filler Cap in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to PCM VERIFICATION TEST .

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .