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Home >> Pontiac >> 2002 >> Firebird Formula, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 5.7L >> Diagnostic Tests >> DTC P0446: EVAP Vent Valve Performance >> Test Description
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Test Description

The numbers below refer to the step numbers in the diagnostic procedures.

  1. 4

    This test determines if the failure is present or intermittent.

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