jeepers dude, what year, what exact model, egr or no egr?...  it's not
psychic wednesday yet.  and WHAT THE f.ck ARE YOU DOING TAKING YOUR CAR
TO SOME IDIOT THAT DOESN'T HAVE THE RIGHT TOOLS???  oh, wait...

Please see my other post. Your attempts at seeking help will reach a dead
end here unless you are willing to divulge enough information to work with.

So far you have told us literally nothing.

If you wish to diagnose the EVAP system yoursalf, you need to buy a Helm
manual. Therein will be the *extensive* procedures for testing the EVAP
system. We cannot tell you here how to do it; it would take pages and pages
to describe everything.

Your VIN tells me you have the 2.3L 4-cylinder.

There IS a known problem with your vehicle and the P1457 trouble code.
Honda has put out a TSB on this issue, updating the TSB over the years. The
most current TSB number I know of is 03-001.

The problem has to do with the EVAP Bypass Solenoid Valve, which corrodes
and becomes non-functional. In some rare cases, the ECU can also be damaged
due to a corrosion-induced short. The cure is replacement of one  or both
parts.

If you're very nice, the dealer *may* agree to do the work for free under
"warranty", but don't count on that, as the car's well out of its official
warranty.

You now need to visit your local dealer. Describe your symptoms and quote
the TSB number I gave you. The Service Advisor at the dealer should check
his database for more (or more recent) TSBs having to do with this issue.

The dealer also has *extensive* Honda-specified EVAP testing procedures an
independent garage may not be aware of, just like an independent will not
be aware of TSBs.

Good luck.