Denso 234-9038 Air / Fuel Ratio Sensor - Upstream or Upstream Front

Denso OE Style Air/Fuel Ratio Sensor 234-9038

Denso 234-9038 is an OE Style heated air/fuel ratio sensor built for exact replacement and first-time fit. It is engineered for specific applications on Nissan and INFINITI vehicles, with direct-fit compatibility for upstream locations.

Key Features

• Heated air/fuel ratio sensor for precise exhaust feedback
• Specific fit design for direct replacement service
• 4-wire configuration with male connector
• Wiring harness length: 14.57
• Thread diameter: 0.711
• OE Style construction for Nissan and INFINITI applications

Product Details

Denso OE Style sensors are manufactured and tested to OE standards, with precision-built components that match the original part’s fit and function. This helps maintain accurate air-fuel monitoring on vehicles such as the Nissan Altima, Nissan Pathfinder, and INFINITI QX56. Part number 234-9038 is also cross-referenced with Bosch 15380 for the same application.

The Denso OE Style line focuses on direct replacement parts that align with factory specifications, making 234-9038 a practical choice when servicing upstream sensor locations on select Nissan and Suzuki models. It is a specific-fit sensor intended for vehicles that require the listed connector, thread size, and harness configuration.

Vehicle Fitment

• Fits 2008-2013 Nissan Armada, Upstream
• Fits 2008-2012 Nissan Pathfinder, Upstream
• Fits 2008-2012 Nissan TITAN, Upstream
• Fits 2009-2012 Suzuki Equator, Upstream
• Fits 2008-2011 Nissan Altima, Upstream
• Fits 2008-2010 INFINITI QX56, Upstream
• Fits 2008-2010 Nissan Altima, Upstream, Excluding California
• Fits 2008-2010 Nissan Frontier, Upstream
• Fits 2010 Nissan Rogue, Upstream, Excluding California
• Fits 2008-2010 Nissan Xterra, Upstream
• Fits 2008-2009 Nissan Altima, Upstream Front
• Fits 2008-2009 Nissan Altima, Upstream, California exempt parts can be used on pollution controlled vehicles in California
• Fits 2009 Nissan Maxima, Upstream Front

Common Replacement Concerns

• Check engine light related to air-fuel ratio sensor performance
• Rough idle or drivability issues tied to incorrect exhaust feedback
• Fuel trim problems caused by a failing upstream sensor
• Slow sensor response or inaccurate mixture readings
• Direct-fit replacement needs for Nissan Altima, Pathfinder, Armada, and related models

Installation Notes

Verify the connector style, wire count, harness length, and thread diameter before installation. This sensor is specific fit and is positioned upstream, so confirm the vehicle’s exact application and emissions configuration, including California notes where listed, before ordering. Use the vehicle service information for proper removal and torque procedures.

Quality Assurance

Denso manufactures and tests these sensors to strict OE standards for consistent replacement quality and exact fit. The OE Style line is built to match factory requirements for the listed Nissan, INFINITI, and Suzuki applications.