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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine Controls And Fuel - 3.6L (LF4 LGX) - DTC P0121 LF4 To DTC P0685 LF4) >> Diagnostic Information and Procedures >> DTC P0446: Evaporative Emission (EVAP) Vent System >> Typical Scan Tool Data

Typical Scan Tool Data

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
Fuel Tank Pressure Sensor Signal Voltage Fuel Tank Pressure
1.5 V Atmospheric Pressure / BARO
Less than 1.5 V Positive Pressure
Greater than 1.5 V Negative Pressure / Vacuum
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