Question about 1998 Honda Accord

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What is Code P1456 DTC

Also the car will not start now.

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P1456 is a Honda manufacturer specific code for Evaporative Emissions Canister Leak Detected. Honda has a Technical Service Bulletin about that code that you should read but most often that code is caused either by a bad seal on the gas cap, or the cap no being tight enough. Either way, DTC P1456 isn't related to the vehicle not starting so you'll need to look elsewhere for the cause of the no start condition. First things to check are to see if there is fuel getting to the engine, and if there is spark getting to plugs. Hope that helps.

Posted on May 06, 2014

Testimonial: "It was not getting any spark (Distributor was the problem. Once I corrected that problem the car started and the P1456 code also went away."

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1 Answer

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 .

Oct 08, 2016 | 2002 Honda Accord

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Look at this information and don't ever over fill the car as it can push fuel into the emissions canister and cause problems.
http://honda-tech.com/honda-accord-1990-2002-2/98-accord-problem-code-p1456-2460060/

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2004 Honda Pilot Evap code P1456 Changed gas cap from honda and still


code p1456 refers to evaporative emission (EVAP) canister purge system(fuel tank system) -leak detected===causes--hose-fuel tank/pressure sensor--fuel filler cap--EVAP valve /bypass solenoid--EVAP two way valve---EVAP canister/vent valve

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

Aug 19, 2014 | Cars & Trucks

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What is code P1456 DTC See Dealer Manual


this refers to the Emission Control System leak detected ,fuel tank system so if you can get under vehicle safely have a look to see if there is a fuel leak but i would expect it would be more likely on the breather side of the system so a repair shop would be the best option

May 06, 2014 | 2002 Acura 3.2TL

1 Answer

What is a P1456 code


Hi James,
Kindly check this website for you for detailed description of code P1456.
P1456 Honda Evaporative Emissions Control System Leakage Fuel Tank

May 06, 2014 | 2002 Honda Accord

1 Answer

Dtc 1456 1998 honda


Apparently this code is a tricky one and hard to pinpoint it's problem and fix. I have seen it clear with just a new gas cap. Seen it clear by running nearly out of gas and filling up. I have seen it clear up with using higher octane gas for a couple of tanks. Many dealers cringe when cars come in with this code, because nothing appears wrong on their scanners, so they clear it and drive for a few miles and give it back to customers with a bill and a "we couldn't find anything wrong with it". Read the following Honda Forum post and make your own decision. Good luck. P1456 Evap Emission Control System leak Drive Accord Honda Forums

Apr 20, 2014 | 1998 Honda Odyssey

1 Answer

P1456 code


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.

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2 Answers

2002 acura TL-s engine code p1456


Code P1456: EVAP control system leakage (fuel system).
Probable causes:
1. Wire harness. Check for correct voltage, open, short to ground, short to voltage
2. Control unit software in need of updating
3. Faulty PCM or ECM
4. Vacuum leaks. Damaged hoses or improper routing
5. EVAP system. Check canister, valves, or components. (gas cap excluded because you say you replaced it)

Some or all of the above could be the source of the check engine light problem.

Jan 25, 2014 | 1999 Acura TL

1 Answer

P1456


code P1456 set when there's small leak in the fuel tank system.
Most known reason for P1456:
-Didn't tight fuel cap on until it click for more that 3 time after fueling up and drove the car too long with cap loose.
-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.

Dec 15, 2010 | 2001 Honda Odyssey

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