Question about 2003 Dodge Durango

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Diagnostic code p0456 and p0440 on 2003 dodge durango

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P0456
Evaporative emission (EVAP) control system leak detected (very small leak)
p0440
Evaporative emission control system malfunction

Posted on Sep 08, 2010

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Posted on Jan 02, 2017

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Small leak in evaporative emissions system. First thing I'd check is gas cap, especially if it appears soon after getting fuel.

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The P0406 means "Exhaust Gas Recirculation Sensor "A" Circuit Low", maybe you have known where is the problem.
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2003 DODGE DURANGO CODE P0456


Usually this P0456 code is caused by an incorrect or faulty gas cap. Filling the fuel tank with the engine running could conceivable cause this code as well or if the cap wasn't properly tightened. Any of the following could also be the cause:
  • A small leak in any of the EVAP hoses or fuel tank hoses
  • A small leak in the purge valve or vent valve
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CODE PO456 EVAP SYSTEM SMALL LEAK DETECTED.POSSIBLE CAUSE.GAS CAP OR LEAKING PURGE SOLENOID.

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Buy a used engine from a reputable wrecking yard. That is the least expensive soulution. Then..........teach your girlfriend, where the dip-stick is!

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replace your evap solenoid this should fix it.

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hello po442 ,po455,po456 is leak detected possible, check the gas cap , basicaly you have a leak that is larger than 0.020' and smaller than 0.040' in the gas evaporative system use your nose to find this one thanks

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P0456 = EVAP Emissions Control System Leak Very Small

Is the gas cap on tight or is the seal damaged? If it needs replacement, get it from the dealer.

Aug 22, 2008 | 2004 Dodge Ram 1500

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