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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 P0446: EVAP Vent System Performance >> Test Description
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Test Description

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

  1. 4  - This test determines if the failure is present or intermittent.

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