2001 Chrysler Town and Country P0456

CHRYSLER TOWN AND COUNTRY
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WYORK
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Chrysler town & country 2001 w/109k. Have code P0456 evap leak monitor small leak detected. Can anyone tell me what this means and where do I start to fix it or find it. Thanks :?:
Mar 3, 2006 at 5:33 AM
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PEPPERMRJ
  • ✓Experienced Mechanic
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This indicates a fuel vapor leak. The evap system controls fuel vapor containment. It holds vapors in a special canister which is emptied when the computer commands a solenoid to open a valve and allow the vapors to be sucked into a runniong engine. Fuel vapor vented to atmoshere is considerded pollution by the EPA.

Most time it is simple a loose gas cap. Pull it off and put is back on tightly. Have the code cleared and see if it returns.

It could also be a bad cap, wrong cap, a small leak in the hoses and tubing associated with the system, or problems with the canister and its valves.

God luck and let us know what happens. :)
Mar 3, 2006 at 8:22 AM
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Suggested Repair

Reseat the gas cap tightly, clear the code, and see if P0456 returns. If it does, check for a bad or wrong cap, small leaks in EVAP hoses and tubing, or problems with the canister and its valves.

Conversation Summary

Owner of a 2001 Chrysler Town and Country with 109k miles has code P0456, EVAP leak monitor small leak detected, and asks what it means and where to start. Expert explains it indicates a fuel vapor leak in the EVAP system. Most often the cause is a loose, bad, or wrong gas cap; small hose or tubing leaks or canister and valve problems are also possible. First step is to tighten the gas cap, clear the code, and see if it returns.

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