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Home >> Jeep >> 2020 >> Compass High Altitude, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> 2.4L - DTCS P0141 To P0600 >> DTC Troubleshooting >> P0457-EVAP System - Loose Fuel Cap >> Possible Causes
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Possible Causes

POSSIBLE CAUSES
LOOSE OR MISSING FUEL FILLER CAP
LARGE EVAP SYSTEM LEAK

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

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