Question about 2003 Dodge Durango

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Deq troble code p0456 - 2003 Dodge Durango

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  • Dodge Master
  • 6,674 Answers

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

Posted on Nov 21, 2013

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Posted on Jan 02, 2017

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1 Answer

Po456 code on kia sportage 2007


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:

Read more at: http://www.obd-codes.com/p0456
Copyright OBD-Codes.com

Jan 02, 2016 | Kia Sportage Cars & Trucks

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2004 lincoln navigator evap system leak


The P0456 is not your cause here. If there are no other codes present other than the P0456, try unplugging the mass air flow sensor and see if the sputtering goes away and if so, replace the mass air flow sensor. You could also have a clogged fuel filter or a bad fuel pump (low pressure)

May 02, 2014 | Lincoln Navigator Cars & Trucks

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Code p0456


P0456 DODGE - EVAP System Small Leak
As you see form the list there is not a single problem that causes this code to set.
Possible causes- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking

Read more: http://engine-codes.com/p0456_dodge.html#ixzz1xQr2MVRf

Jun 10, 2012 | 2001 Dodge Stratus

1 Answer

Getting codes P0442 and P0456 Test $86 and $88 -- HI


http://repairpal.com/check-engine-light-with-code-p0442-p0456-andor-p1450-064

May 16, 2011 | 2005 Kia Sedona

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P0440, P0442, P0456 Evaporative Emission System Leak Detected, very small leak. Where do I find this to fix? And no, it's not a loose gas cap. Did not pass Vehicle Inspection today at DEQ/DOL in Wa.


You will need an EVAP Smoke Machine, and possibly a scanner to
diagnose the EVAP System, unless you plan on being there forever

If you had a schematic of the system and got luckly, you might find a leaking
hose or bad switches,bad valves,insects in a valve,etc

Dec 01, 2010 | 2003 Dodge Intrepid

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2005 Dodge Grand Caravan codes P0456 and P0303. Engine light on. Changed Gas cap. Need to pass inspection. Please help with diagnosis.


p0456--emission control system leak(verysmall) leak, check all hoses to emission controls, cylinder 3 missfire detected. could be plugs, wires, or coil.this is code p0303,

Jun 04, 2009 | 2005 Dodge Grand Caravan

1 Answer

Intrepid 2.7 error code P0456


this is an emission leak code..could have cracked emission hose at back of engine or on top of fuel tank..check gas cap for corrosion or filler tube for holes

May 10, 2009 | Dodge Caravan Cars & Trucks

5 Answers

Diagnostic code P0456 for 2003 Dodge Ram 1500 5.7


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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