Vapor Pressure Sensor

The Vapor Pressure Sensor (VPS) measures the vapor pressure in the evaporative emission control system. The Vapor Pressure Sensor may be located on the fuel tank, near the charcoal canister assembly, or in a remote location.

Evaporation Pressure Sensor Code 193

This sensor uses a silicon chip with a calibrated reference pressure on one side of the chip, the other side of the chip is exposed to vapor pressure. Changes in vapor pressure cause the chip to flex and vary the voltage signal to the ECM. The voltage signal out depends on the difference between atmospheric pressure and vapor pressure. As vapor pressure increases the voltage signal increases. This sensor is sensitive to very small pressure changes (1.0 psi = 51.7 mmHg).

Celica 2000 Tank Pressure Sensor

Vapor pressure sensors come in variety of configurations. When the VPS is mounted directly on the fuel pump assembly, no hoses are required. For remote locations, there may be one or two hoses connected to the VPS. If the VPS uses one hose, the hose is connected to vapor pressure. In the two hose configuration, one hose is connected to vapor pressure, the other hose to atmospheric pressure. It is important that these hoses are connected to the proper port. If they are reversed, DTCs will set.

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Responses

  • hamish
    How to replace a vapor pressure sensor on 2001 rx300?
    3 years ago
  • Mariann
    How to change fuel vapor pressure sensors of toyota corolla altis 2010?
    3 years ago
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    What is toyota sensorture vapor system?
    2 years ago
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    How does Toyota Camry fuel regulator works?
    1 year ago
  • ESA
    How to test a fuel pressure sensor on a toyota camry 1996?
    8 months ago
  • MADIHAH
    How to test fuel tank pressure sensor 2003 tundra?
    8 months ago
  • Tim
    What is a fuel vapor pressure sensor?
    7 months ago
  • Belinda
    What does vapor pressure switch do in 2002 toyota camray 6 cly?
    7 months ago
  • muhammed
    How a vapor pressure sensor pressure works?
    7 months ago
  • amalda
    How to replace a fuel tank/vapor pressure sensor on a 1999 corolla video?
    6 months ago
  • aurora
    What should your Evap vapor pressure be?
    5 months ago
  • Helena
    How do you change gas tank pressure sensor on a 2014 toyota corolla?
    4 months ago
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    What sensors are located in a prius gas tank?
    3 months ago
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    What does vapor pressure sensor do on 2000 toyota camry v6?
    3 months ago
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    How to test vapor pressure sensor on 2000 toyota camry v6?
    3 months ago
  • ALMAZ
    Where is the fuel tank pressure sensor located in a 2001 toyota echo?
    2 months ago
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    How does a vapor pressure sensor work?
    2 months ago
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    How to change gas tank sensor 99 camry?
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    How to replace fuel pressure sensor 2003 toyota prerunner?
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