Standard Ignition AS79 Fuel Tank Pressure Sensor
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Standard Ignition

Standard Ignition AS79 Fuel Tank Pressure Sensor

Brand Standard Ignition AS79
Connector Gender Female
Connector Type Plug In
Mounting Location External
Terminal Gender Male
Terminal Type Blade
Fits Toyota · 3 vehicles

Plug-in design. Simplifies installation with a single rectangular connector.

External mounting. Built for an outside-the-tank sensor setup.

Black finish. A clean, low-profile look for the sensor housing.

Cross-references Standard Ignition AS79, 2-21015 and 1049950141 for the same application. See all 6.

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Fuel Tank Pressure Sensor for Toyota Sienna

Standard Ignition AS79 is a fuel tank pressure sensor for the evaporative emissions system on select Toyota Sienna models. It uses a black external housing with a rectangular plug-in female connector and 3 blade terminals for a direct electrical interface.

  • Fuel tank pressure sensor for evaporative emissions monitoring
  • Fits 1998-2000 Toyota Sienna
  • External mounting location with included mounting bracket(s)
  • Black finish with 1 rectangular female connector
  • 3 male blade terminals for plug-in connection
  • 1 port design; wiring harness not included

Detailed Product Overview

Standard Ignition AS79 is built for vehicles that rely on accurate fuel tank pressure feedback to support EVAP system operation. This sensor mounts externally and uses a single-port configuration with a rectangular connector layout, making it a direct replacement choice for 1998-2000 Toyota Sienna applications. This part cross-references Denso 2-21015 and Toyota 8946008020 for the same application. The AS79 part number is also useful when searching for a Standard Ignition fuel tank pressure sensor for Toyota Sienna models.

Common Symptoms This Part Can Address

  • EVAP-related diagnostic trouble codes tied to tank pressure readings
  • Incorrect fuel tank pressure sensor output
  • Check engine light concerns related to evaporative emissions monitoring
  • Faulty sensor connector or terminal interface at the tank pressure circuit
  • Emissions inspection failures caused by pressure signal issues

Installation Notes and Tips

Verify connector shape, terminal style, and external mounting location before installation. Confirm the vehicle is a 1998-2000 Toyota Sienna and compare the original sensor connector and bracket layout to the AS79 part number before replacement. Because mounting hardware and wiring harness are not included, reuse serviceable original components where applicable and inspect the EVAP connector for corrosion or damage.

Quality Assurance

Standard Ignition supplies replacement sensors for air and fuel delivery systems with application-specific fitment. AS79 is listed for confirmed Toyota Sienna coverage from 1998 through 2000, helping support accurate part selection for the correct vehicle and emissions system configuration.

Related reading

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2000ToyotaSiennaN/A—
1999ToyotaSiennaN/A—
1998ToyotaSiennaN/A—
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — AS792-2101510499501418946008020EC2514VPSA37