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post #1 of 6 (permalink) Old 07-31-07, 07:14 PM Thread Starter
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frown Somebody met this code before: P0456?

Hi, all. I have a problem with my 02 sable. Checking engine light illuminated this afternoon. I went to autozone and they helped me to read code out:
P0456 EVAP Leak Monitor Small Leak Detected.

Did anyone meet this problem before? And what reason could this be? Thank you.

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post #2 of 6 (permalink) Old 07-31-07, 09:09 PM
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Re: Somebody met this code before: P0456?

Get yourself a subscription to Alldata or Mitchell on line and follow the diagnostic procedure to locate the leak. It's usually a vacuum hose or a purge canister solenoid. But you'll need vacuum diagrams and wiring diagrams to scout it out.

I'm a retired ASE Master/L-1 Technician. I still keep current with the latest automotive technology. Visit my blog for cool articles and TSB's: http://www.ricksfreeautorepairadvice.com/
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post #3 of 6 (permalink) Old 08-01-07, 09:13 AM
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Re: Somebody met this code before: P0456?

Might just be the gas cap. Take it off and clean the sealing surfaces of the cap and the filler neck.
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post #4 of 6 (permalink) Old 08-01-07, 10:49 AM Thread Starter
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Re: Somebody met this code before: P0456?

Thanks for the comments. I took off the gas cap and retightened it. Now I need to clear the signal. But how? Just disconnect the battery and wait for few minutes?
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post #5 of 6 (permalink) Old 08-01-07, 10:54 AM
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Re: Somebody met this code before: P0456?

Yes, generally 15 seconds is enough. Press the brake to be sure.

Did you wipe down the sealing surfaces of the gas cap?
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post #6 of 6 (permalink) Old 08-03-07, 06:16 AM Thread Starter
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Re: Somebody met this code before: P0456?

Thank you shoz. Just did the job. Hope that could be ok...
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