Check Engine Light With Codes P0440, P0441, P0442, or P0446 on Lexus GX470

Submitted by Jim Taddei · May 29, 2025
Published by RepairPal

Problem overview

The Check Engine Light may illuminate with various EVAP system fault codes stored. Our technicians tell us this may be caused by a sticking EVAP Purge Vacuum Switching valve. An improved valve is now available to remedy this problem.

12 people reported this problem
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Lexus GX470 vehicles with this problem

Average mileage: 88,600 miles
(70,000 - 104,000)

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