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View Full Version : What causes code P 0456?


volume311
11/01/2004, 04:33 PM
It is for a "small evap leak"
Can't find any thing isuzu specific on it.
I've seen it mentioned before can seem to find the thread thought.
skunkworks
11/01/2004, 04:48 PM
Could be a loose gas cap or a broken vaccum line in the EVAP system. Best way for a diag is a smoke machine.

albert
________
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volume311
11/01/2004, 05:09 PM
Though about that one, whats the smoke test?