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Home >> Buick >> 2003 >> Century Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls Self-Diagnostics - 3.1L Engine >> Diagnostic Tests >> DTC P1404: EGR Closed Position Performance >> Test Description
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Test Description

The number below refers to the step number on the diagnostic procedure.

  1. 1  - This step verifies that the malfunction is present.

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