Mike's Workshop Manuals
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Buick
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2002
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Century Custom
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System Self-Diagnostics - 3.1L Engine
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Diagnostic Tests
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DTC P1404: EGR System (Valve No. 2)
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Conditions For Running DTC
Conditions For Running DTC
The system voltage is greater than 11 volts.