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Home >> Buick >> 2009 >> Allure Super >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 5.3L - DTC P0420 To DTC P3449 >> DTC P0446 >> Typical Scan Tool Data
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Typical Scan Tool Data

FTP Sensor Signal Voltage Fuel Tank Pressure
1.5V Atmospheric Pressure/BARO
Less than 1.5V Positive Pressure
More than 1.5V Negative Pressure/Vacuum