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Question Asked: Analysis codes P1491 & P0172
January 08, 2010, 04:22 PM
My CEL came on and remained. Local shop check reflected a temp code P1491-exhaust gas recirculating valve lift insufficient & perm code 0172-system too rich. What does this mean? Incidently, after the check the CEL went out but I am still concerned since a trip is coming up.
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