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." property="og:description">
For Shop Owners

P0452 SATURN - Fuel Tank Pressure Sensor Circuit Low Voltage

Repair Importance Level: 1/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Fuel Tank Pressure Sensor harness is open or shorted
  • Fuel Tank Pressure Sensor circuit poor electrical connection
  • Faulty Fuel Tank Pressure Sensor
What does this mean?

Tech notes

On most Saturn vehicles the sensor is on top of the fuel tank. The P0452 code may set when replacing the fuel filter, user recommends disconnecting the car battery before replacing the fuel filter.
What does this mean?

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 SATURN 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 Saturn - Fuel Tank Pressure Sensor Circuit Low Voltage -

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P0452 SATURN Comments

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Any information is appreciated. Thanks
Repair Importance Level: 1
1=Low 2=Medium 3=High
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard

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