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Chevrolet
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2006
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Impala SS
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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 - 5.3L - DTC P0136 To DTC P0446
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DTC P0446
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Conditions for Setting the DTC
Conditions for Setting the DTC
The fuel tank pressure sensor is less than -12 inches H2O.
The above condition is present for more than 5 seconds.