Denso 234-9150 Air / Fuel Ratio Sensor - Upstream

Denso OE Style Air/Fuel Ratio Sensor 234-9150

Denso 234-9150 is an OE Style heated air/fuel ratio sensor built for exact replacement and first-time fit. It is engineered for precise signal control in the exhaust stream, making it a direct choice for Volvo C30, S40, V50, V70, and S60 upstream sensor service.

Key Features

• Heated air/fuel ratio sensor for upstream exhaust placement
• Specific fit design for direct replacement on listed Volvo applications
• 4-wire configuration with 27.20 in. wiring harness length
• OE Style construction for accurate fit and connector alignment
• Built and tested to OE-level standards for consistent replacement performance

Product Details

The Denso OE Style line focuses on replacement parts that match original equipment fit and function. Part number 234-9150 is a specific-fit, heated air/fuel ratio sensor designed for upstream use on select Volvo models, including the 2007-2010 Volvo C30, 2004-2010 Volvo S40, 2005-2010 Volvo V50, 2003-2006 Volvo V70, and 2003-2005 Volvo S60. This sensor is intended for drivers and technicians replacing a worn or failed upstream sensor on Volvo C30, S40, V50, V70, or S60 applications.

This part cross-references Bosch 13118 and NTK 25662 for the same application.

What It Helps Address

• Check engine light related to upstream air/fuel ratio sensor faults
• Rough idle caused by inaccurate exhaust oxygen feedback
• Fuel trim issues from delayed or unstable sensor response
• Emissions test failures tied to sensor performance problems
• Driveability concerns from incorrect air/fuel mixture correction

Installation Notes and Tips

Verify the connector, wire count, and upstream position before installation. This Denso 234-9150 sensor uses a specific-fit design, so matching the vehicle year, model, and exhaust location is important for proper installation. Inspect the harness routing and sensor threads during replacement, and confirm the original fault code before clearing the system.

Quality Assurance

Denso manufactures and tests this OE Style sensor to strict original-equipment standards. The precision-built design supports accurate replacement fit and dependable installation on the listed Volvo applications.