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i have an 03 tl. check engine light on code p0401 egr (insufficient flow). changed egr valve. reset code, drove car to work light came back on, had checked same code.
i have an 03 tl. check engine light on code p0401 egr (insufficient flow). changed egr valve. reset code, drove car to work light came back on, had checked same code.
Go to the DIY thread on the main 2gtl page. There are instructions on how to clean it.