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P0452 Pontiac

P0452 Pontiac - Fuel Tank Pressure Sensor Circuit Low Voltage

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Possible causes
- Fuel Tank Pressure Sensor harness is open or shorted
- Fuel Tank Pressure Sensor circuit poor electrical connection
- Faulty Fuel Tank Pressure Sensor
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Tech notes
On most Pontiac vehicles the sensor is on top of the fuel tank.
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When is the code detected?
An excessively low voltage from the sensor is sent to Engine Control Module (ECM).
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0452 Pontiac Description

The fuel tank pressure sensor responds to changes in fuel tank pressure. Vacuum is consider negative pressure. The information supplied by the fuel tank pressure sensor to the Engine Control Module (ECM) is used in order to detect vacuum decay or an excessive vacuum during the EVAP diagnostic routine.

The fuel tank pressure sensor signal voltage to VCM varies from a minimum of about 0.1 volts with pressure in the fuel tnk to greater than 4.0 volts with high vacuum in fuel tank.

OBDII Code P0452 Pontiac - Fuel Tank Pressure Sensor Circuit Low Voltage
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PONTIAC Technical Service Bulletins for P0452 code
2009 PONTIAC G5 Engine And Engine Cooling:engine Details
2009 PONTIAC G5 Fuel System, Other:storage:tank Assembly:pressure Relief Devices Details
2009 PONTIAC G5 Electrical System Details
2010 PONTIAC G5 Engine And Engine Cooling:engine Details
2010 PONTIAC G5 Fuel System, Other:storage:tank Assembly:pressure Relief Devices Details
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