Question about 1998 Nissan Maxima

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1998 nissan maxima service engine light is on

We ran diagnostics on it and 3 code came up. 1440, 1493, and 1400 again. this problem i was told has something to do with the evap canister, either a leak or a bad valve. How do i narrow it down.

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  • joeyee1004 Oct 12, 2008

    Great feed back



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Its most likely the vent control valve, which is bolted to the canister behind the rear wheel on drivers side. However, the control valve is held on to the canister with 2 bolts, which will most likely brake or at least on of them. In that case you will need the canister also. You can test the control valve by un-plugin it ads supplying 12 V to it. It should click. Is click is heard, that is a good sound. If no clicking is heard, than the valve is stuck and will need to be replaced. Don't forget about the screws that hold it in. You may need the canister if they brake. Let me know what you find.

Posted on Oct 12, 2008


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