DTC P1456 - EVAP Emissions Control - Drive Accord Honda Forums
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post #1 of 5 Old 01-09-2007, 07:41 AM Thread Starter
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DTC P1456 - EVAP Emissions Control

What damage to the vehicle will result if the cause of this code (P1456 - EVAP Emissions Control System Leakage - Fuel Tank System) is not taken care of?

Is this something I need to have diagnosed and fixed immediately?


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post #2 of 5 Old 01-09-2007, 01:35 PM
39.1 going on 40mpg!
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Excess fuel consumption, excess emission, and spark plug fouling to name a few... EVAP systems are a PITA to diagnose if it's not something obvious like a loose sealing gas cap.

I'd start with cleaning the filler neck area of rust and cleaning the rubber seal around the gas cap first to see if the problem goes away.

BTW, what car is it?

2013 Accord EX-L Navi 11,178 miles and counting...
<a href=http://www.fuelly.com/driver/SSMV6/accord target=_blank><a href=http://badges.fuelly.com/images/smallsig-us/210024.png target=_blank>http://badges.fuelly.com/images/smallsig-us/210024.png</a></a> . . . . Last tank mpg = 32.2mpg

2005 Accord EX-V6 Sedan (3/05-1/13) retired at 127,110 miles
1993 Accord 10th Anniversary Edition Sedan (5/08-7/10) Retired at 153,007 miles
2000 Civic Si (5/00-3/3/05) Retired at 59,500 miles
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post #3 of 5 Old 01-12-2007, 02:58 AM Thread Starter
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It's a 2000 LX.

It soiunds like I need to have this taken care of quickly... Well, there goes the new golf clubs.
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post #4 of 5 Old 01-12-2007, 08:38 AM
ready to go....
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Maybe these be of some help.....
Attached Images
File Type: pdf 00 P1456 99-074.pdf (19.8 KB, 6774 views)
File Type: pdf more P1456 99-075.pdf (218.5 KB, 6299 views)

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(_l_)(_/_)(_l_)(_\_)(__)(_l_)(_/_)(_l_)(_\_)(__)(_l_) butt dance.

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post #5 of 5 Old 01-14-2007, 12:04 AM
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You could have simply not tightened the gas cap when filling up your car.

I would have the code cleared by Autozone. On my 95 you can remove the radio/ECU backup fuse for about 30 seconds to reset the ECU. I'm not sure about your Accord. Make sure that gas cap is tight and do not overfill your tank. If the error code comes back after resetting your ECU, then you have a problem.

Cleaning the threads at the tank and checking the rubber gasket is also an easy and can be a cheap fix to your problem.
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