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brian mintmier Posted on Apr 01, 2014
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P1456 code will a p1456 code cause a miss, or do I have two problems

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  • ken hane Apr 01, 2014

    replace your gas cap, as far as your miss goes, replace the spark plugs and plug wires, and fuel filter. start there and also change the distributor cap and rotor. winter weather clogs your fuel filter, you should be good to go

  • Todd Arndt
    Todd Arndt Apr 02, 2014

    Ken is correct, the Gas Cap is normally the most common problem with the EVAP System but there are a few more that it could be. His comment to give the tune up will take care of your misfire. Thank you Ken..... Spot on recommendations...

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Todd Arndt

Todd Arndt

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  • Nissan Master 2,044 Answers
  • Posted on Apr 01, 2014
Todd Arndt
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Your Code P1456 is a EVAP (Evaporative Emission Control System Leak Detected). Normally this is a leak in the System and will not cause a Miss. The Fuel goes to the Fuel Rail and the Excess is sent back to the Fuel Tank via the EVAP System. There is a Purge Valve on top of the tank that is probably causing the leak. The Miss is another issue (Spark Plugs, Ignition, Coil, or clogged fuel filter) would be where I would start.

  • Ron Townsend Apr 02, 2014

    replacing the fuel cap is a cheap fix and no one ever thinks about it. you've probably still have the orginal cap.as far as the miss check your pressure make it's up to par, keep in mind the timing belt if it's never been done before

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Find and replace canister purge valve for 2002 honda accord
This code P1456 does mean that you replace purge valve . Could be other thing's must test the Evaporative emission system . P1456 Honda Evaporative Emissions Control System Leakage Fuel Tank Suggest you take an have a qualified repair shop diagnose the problem .
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Having a gas smell coming from the back of the car near tell pike
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http://honda-tech.com/honda-accord-1990-2002-2/98-accord-problem-code-p1456-2460060/
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There is also a second reference to the code which is EVAP system leakage ====filler cap--EVAP canister purge valve--hoses---EVAP canister shut off valve---ECM programming---ECM

Check with the service dealer that the filler caps are interchangeable . It may be coincidence that the problem started after you changed caps or it may have shown a failure in the making
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What is Code P1456 DTC
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Kindly check this website for you for detailed description of code P1456.
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P1456
code P1456 set when there's small leak in the fuel tank system.
Most known reason for P1456:
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-or a bad gas cap.
I'll try tighting the gas cap.
clear check engine.
if code come back, replace gas cap and clear check engine light again.
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I have a 01 honda accord 2.3l it has a obd fault code p1456, can any one tell me what this code means?
smal evap leak detected....very common check your fuel cap make sure it't tightened at least three clicks-check the o-ring of the cap as this will
cause a leak as well. drive vehicle the code will clear it's self if it odes not go away after 1 week of continuos driving it may have a larger leak
in this case you need to see a dealership-they will perform evap function test and determine if problem is worse-1457 is the bad one indicates large leak and can be expensive,. hope this helps.
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