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Pontiac
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2002
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Firebird Base, 2D Convertible, Automatic
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Repair and Diagnosis
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Engine Performance
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Testing & Diagnosis
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Engine Control System Self-Diagnostics - 3.8L
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Diagnostic Tests
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DTC P0446: EVAP Vent Valve Performance
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Test Description
Test Description
The number below refers to the step number in the diagnostic procedures.
4
This test determines if the Fuel Tank Pressure (FTP) sensor is functioning.