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The code p0456 could be from the exhaust too?

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Code p0456 refers toevaporative emission system(EVAP) very small leak====causes --mechanical fault--hose connection/s--EVAP pressure sensor
extremely unlikely to have anything to do with exhaust

Posted on Jan 01, 2017

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Posted on Jan 02, 2017

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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

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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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Nissan xterra


p0456 was likely the gas cap, evaporative emission alert.

p1273
Either the exhaust is leaking or management needs reset.

'Clear the Self Learning Data' procedure. Anytime fuel component is replace, this procedure needs to be done. (exhaust emissions as well)

1. Unplug MAF sensor
2. Start car for about 3 seconds. Turn off car. confirm P0102 code
3. re-connect MAF sensor. Clear code. START car.
4. Run car for 10 mins.

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1 Answer

2002 intrepid problem codes p0430, p0171, p0174, p0456


PO 430 ---is a worn out exhaust converter-bank 2

PO456---Evap System Vent Valve Failure

PO 171 & 174---in your cause old & failed oxygen sensors
closest to the motor

Think you need to start a log book & some type of
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1 Answer

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

2 Answers

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

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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.

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