2001 Jeep Wrangler Scanned Trouble Codes: P0455 and 0442

2001 JEEP WRANGLER
137,000 MILES • 6 CYL • 4WD • MANUAL
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BELLAT
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I have scanned the computer for the "Check Engine" light and it gave me codes P0455 and P0442 "Evaporative Emission System Leak Detected" "System Lock".
We replaced the gas cap and the problem still remains, can you tell me where and how I should look for a problem.
Jun 24, 2010 at 7:37 AM
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