P1456 - 2001 Honda Odyssey

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 .

What make an model ? P1456 Honda Evaporative Emissions Control System Leakage Fuel Tank P1456 Nissan Evaporative Emission Control System Leak Detected Small Leak

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/

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.

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

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.

You have EVAP leak at the fuel tank you need to install a smoke machine on the EVAP system and where the smoke comes out there is your leak.

Just replace the evap purge valve.

P1456 EVAP CONTROL SYSTEM LEAKAGE ( FUEL TANK SYSTEM)

There are a lot of potential leak points. The canister could be leaking, any number of the system hoses could leak. You could even have a leak in the fuel tank. Do you ever smell fresh gas?

There is no P4156 but, there is P1456....it is this:

P1456 EVAP System Leak Detected (Fuel Tank)

You either have a cracked hose or an air leak to or on the fuel tank.