Denso 234-9134 Air / Fuel Ratio Sensor - Upstream

Denso OE Style Air/Fuel Ratio Sensor

Denso 234-9134 is an OE Style heated air/fuel ratio sensor built for specific-fit replacement on select Nissan applications. It is engineered for accurate signal response and a first-time fit, making it a direct choice for 2016-2018 Nissan Altima upstream sensor service.

Key Features

• Heated air/fuel ratio sensor for faster operating temperature and stable feedback
• Specific-fit design for direct replacement on the listed application
• 4-wire configuration
• Wiring harness length: 10.35
• OE Style construction for replacement matching the original sensor layout

Product Details

Denso OE Style parts are built to match original equipment expectations for fit and function. Part number 234-9134 is manufactured and tested to strict OE standards, with precision-built components intended to match the original sensor location and connection style. This sensor is used on 2016-2018 Nissan Altima upstream applications and is a practical replacement when the original sensor has aged, become slow to respond, or is no longer delivering consistent air/fuel feedback. This part cross-references Datsun/Nissan (e.g., 226933TY0A, 226933TY0B) for the same application.

Common Issues This Sensor May Address

• Check engine light related to air/fuel ratio sensor performance
• Rough idle or inconsistent fuel control feedback
• Delayed sensor response during closed-loop operation
• Emissions test failure tied to upstream sensor faults
• Driveability concerns caused by inaccurate exhaust mixture readings

Installation Notes and Tips

Fits 2016-2018 Nissan Altima, upstream. Confirm the connector style, harness routing, and sensor location before installation. Because this is a specific-fit heated sensor, matching the original application details is important for proper operation. Use the vehicle service information for torque and diagnostic procedures, and clear any stored fault codes after installation.

Quality Assurance

Denso manufactures this OE Style sensor to strict original-equipment standards and tests each component for replacement accuracy and fit consistency. The 234-9134 is intended to provide the correct part and the correct fit for the listed Nissan Altima application.