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Chevrolet
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2008
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Cobalt LS, 4D Sedan, Standard
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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 & Fuel System - 2.2L (L61) - DTC P0412 To DTC P2544
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DTC P0446
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Typical Scan Tool Data
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