Denso 234-9131 Air / Fuel Ratio Sensor - Upstream

Denso OE Style Air/Fuel Ratio Sensor

Denso 234-9131 is an OE Style heated air/fuel ratio sensor built for specific-fit replacement on select Acura and Honda applications. It is engineered for exact replacement and first-time fit, making it a direct choice for drivers servicing upstream sensor issues on vehicles like the Honda Accord, Honda CR-V, Acura ILX, and Acura TLX.

Key Features

• Heated air/fuel ratio sensor for upstream placement
• Specific-fit design for direct replacement
• 4-wire configuration
• 8.27 in. wiring harness length
• Regular grade OE Style replacement
• Built and tested to OE standards for consistent sensor performance

Product Details

The Denso OE Style line focuses on direct-fit emission control components that match original equipment requirements. Part number 234-9131 is designed for precise installation and dependable signal response in air/fuel monitoring systems. This sensor is used on applications including 2013-2017 Honda Accord upstream, 2015-2016 Honda CR-V upstream, 2017-2019 Honda CR-V upstream, 2015-2020 Acura TLX upstream, and 2016-2022 Acura ILX upstream. This part cross-references Honda 365315A2A01 for the same application.

What It Helps Address

• Check engine light related to upstream air/fuel sensor faults
• Rough idle caused by inaccurate mixture feedback
• Fuel trim problems from a slow or failing sensor
• Emissions test failures tied to sensor performance
• Driveability issues on Honda Accord, Honda CR-V, Acura ILX, and Acura TLX applications

Installation Notes and Tips

Confirm upstream sensor location before ordering, since this part is specific fit and not universal. Match the connector, wire count, and harness length to the original sensor on the vehicle. For best results, inspect the exhaust threads and wiring routing during replacement, and verify the repair with a scan tool after installation.

Quality Assurance

Denso manufactures and tests this OE Style sensor to strict original-equipment standards for accurate replacement fit and function. The design is intended to deliver the correct part and fit the first time on confirmed applications such as the Honda Accord and Acura ILX.