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Engine Light On 98 Ls400 W/ Code Po441


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I have a PO441 code reading from Autozone. The printout indicates it could be 1) Block Vapor Canister, 2) Vent Solenoid Malfunction, or 3) Purge solenoid Malfunction. How do I know which one it is and where should the location be? Thanks very much for your help.

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