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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 P0403: EGR Solenoid Control Circuit >> Test Description
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Test Description

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

  1. 6  - This step tests for voltage that is constantly being applied to the EGR valve.
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