P1456 Honda Code - Evaporative Emissions Control System Leakage Fuel Tank

hi i have a 01 civic it has a code p1457 says leak near evap canister we took it out and looked at it and did not see any cracked hoses and the valve on the side we tested it it seems to operate fine
now that we put it back together it will not start it wants to start with starting fluid and when you turn the key on we can hear the fuel pump kick on and it spits out a little bit of fuel at the fuel rail

Disconnected hoses or connector on the EVAP system should not cause a no start situation. You could start by checking the connectors around the parts you removed.

I have an 05 Civic with the P1456 code that won't go away.

I tried tightening the fuel cap, etc. to the point where I went and bought a new fuel cap. But the code still keeps coming back.

The fuel cap that replaced it doesn't look exactly the same as the factory one, should that matter? Or do I need to get it smoke tested for leaks at this point?

The look of the cap shouldn't matter, checking the EVAP system with an smoke machine it's probably your best next step.

2002 honda civic LX 1.7 L code P1456 I replace a new fuel cap and clear a code now the code is gone. must be the CAP

In the case of a loose fuel cap, how long does it take for the CEL to come on?

3 - 4 engine starts

Thanks.

I have a Civic 05 with the same code. I just found out a common problem is an O-ring on the filler fuel pipe, just between the top metal piece (where the cap screws) and the plastic piece. It looks like to fix it, the rear left wheel has to be taken out. I'll see my stealership tomorrow.

Could somebody help me please I have the code p1456 on my Honda Accord 1998.I change the gas cap that did not help.i change the shut off valve that did not work.when a take the car to the shop did a smoke best no leak was found.my car still smell like gas.plaeae somebody help me smell the gas is making me sick.

Unfortunately there are many place where could be a gas leak. If the code is combine with the gas smell, it's very likely that there is gas leak on top of the gas tank, where the fuel lines are connected to the fuel pump. You have to remove the trunk cover to access the fuel pump.

Here is an image I found online: http://honda-tech.com/attac...

I will try that I try almost everything thank

If there is a gas leak, then you may have to replace the gas tank. If you tried everything I'm not sure what else I can recommend.

Thanks I guess that my next step there is no sign of leak on the gas tank

There is no leak there I

Hi Ganesh, I too have the same exact problem (havent yet checked in my trunk to see if there is any leak on the fuel pump), but have you been able to identify the problem? I too took it to a mechanic shop, they did the smoke test and said they could not find any issues. My mileage had gone down, but after using premium gas, the mileage seems to have gotten back to where it was earlier. I smell a lot of gas around my fuel tank, since you have the same/similar issue and if you have been able to figure out the problem, please let me know. I did not replace my shut-off valve yet, should I try doing that even though the mechanic stated everything was fine when he did the smoke test? I will first check the trunk and post pictures. Your help is much appreciated!
@OBDIITech - I am in Atlanta, would you suggest a mechanic that can look at this issue for me? I replaced my gas cap but the code has not gone and the smell of gas makes it clear that there is something wrong. I dont want to go to the stealer! I want a reliable and honest mechanic that can do the job for me. Thanks!

I don't know what to tell u too do.my next step is to change the filler neck that next too the gas tank.I will keep u up to date about that.I did change did change the shut off vavle same problem.Did u see any leak coming from any where?If is not the filler neck I next thing to change is the gas tank.Where do u live let me know I have a good Mechinics he work for Honda he is trying to help me out.I check almost all the part where gas is coming from no luck.

My problem was my canister two-way valve

Did that remedy last?

I have 04 Honda Pilot with 100k miles. Codes reads P1456. Cleared and tighten cap. Cap looks new also. Light came back in a few days. Any ideas?

Unfortunately there must be another leak somewhere near the gas tank or canister. Next step is to check all the hoses around the EVAP canister and check for loose or cracked hoses. If you can't find anything, then take it to a shop and have them use a smog machine to find the leak.

My new gas cap did not fix this error code. It must be the EVAP canister, but I just replaced the EVAP canister 5 years ago.

What model and year is your Honda?

1998 Honda Accord LX

Next step is to check for loose or damage hoses or components around the canister. If no damage is found, then you can either use a smoke machine to find the leak or start replacing components. One of the most common problems is the Canister Vent Shut Valve Solenoid.

Canister Vent Shut Valve Solenoid was replaced along with the canister 5 years ago (20,000 miles ago). Several months ago the splash-prevention flap inside the fuel filler neck broke off and there is now not even a slight release of fuel tank pressure when removing gas cap. Check engine light came on several weeks after fuel filler neck flap broke off and this makes me wonder if there is a leak in the fuel filler neck that is causing the check engine light. New OEM gas cap did not help. I will smoke fuel filler neck and check hoses for leaks first. **** The most upsetting thing is that there are nearly $500-worth of parts just to collect fuel vapors, but it costs just as much to figure out which part or parts are not working. **** There should be sensors and codes that show exactly which parts are at fault, not "SOME PART OR PARTS BETWEEN THE CANISTER AND THE FUEL TANK WILL CAUSE YOU TO NOT BE ABLE TO REGISTER YOUR VEHICLE ... SCHMUCK". Frustrating!

I agree. Fortunately newer vehicles have way more sensors to indicate with better precision what the problem is. The problem is that the more sensors in the vehicles the more chances are that those sensors fail. I hope you can find the problem with your vehicle.

I have acura mdx 2002 model with error code 1456, what is the problem with it

There are many things that could set the P1456 code. The first thing you need to do is check the gas cap. Inspect and tight the gas cap, and clear the code. If the problem comes back, then you may have to have a mechanic check for EVAP leaks.

2003 hond civic and I have very strong fume smell in the rear end and code p1456?

The P1456 code means that there is Fuel Gas leak in the EVAP/Fuel system, my suggestion is to have a repair shop check underneath your Civic for damage hoses or EVAP/Fuel components.