Mike's Workshop Manuals
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Buick
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2003
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Century Base
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls Self-Diagnostics - 3.1L Engine
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Diagnostic Tests
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DTC P1404: EGR Closed Position Performance
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Test Description
Test Description
The number below refers to the step number on the diagnostic procedure.
1
- This step verifies that the malfunction is present.