Standard Ignition AS122 Fuel Tank Pressure Sensor

Fuel Tank Pressure Sensor for Toyota 4Runner

Standard Ignition AS122 is a fuel tank pressure sensor for select Toyota 4Runner applications. It uses an external mounting location with a rectangular plug-in connector and a 3-blade male terminal layout for direct replacement service.

Key Features

• Fuel tank pressure sensor for air and fuel delivery diagnostics
• External mounting location with included mounting bracket(s)
• Black finish
• 1 female rectangular connector
• 3 male blade terminals
• 1-port sensor design
• Wiring harness not included

Detailed Description

Standard Ignition AS122 is built for evaporative emissions system pressure monitoring on select Toyota 4Runner models. This sensor is used to measure fuel tank pressure so the vehicle’s control system can evaluate EVAP system operation and detect pressure changes during testing and normal driving. Compatible With 1999 Toyota 4Runner and 2000 Toyota 4Runner, this part supports direct replacement service where the original sensor uses the same external mount and connector style. AS122 also cross-references Denso EC1756 for the same application.

What It Helps Solve

• Fuel tank pressure sensor fault codes
• EVAP monitor failures
• Incorrect fuel tank pressure readings
• Check engine light concerns related to evaporative emissions diagnostics
• Replacement needs for a damaged external sensor housing or connector interface

Installation Notes and Tips

Verify connector shape, terminal count, and mounting location before installation. This sensor uses a female rectangular connector with male blade terminals and mounts externally, so the original bracket and vehicle-side connector condition should be checked during service. Confirm fitment for Fits 1999 Toyota 4Runner and Fits 2000 Toyota 4Runner, N/A before ordering.

Quality Assurance

Standard Ignition replacement parts are built to meet application-specific service requirements for fuel and emissions system repair. Part number AS122 is listed for select Toyota 4Runner applications and should be matched to the original OE reference and connector configuration before installation.