Denso 234-5093 Air / Fuel Ratio Sensor - Upstream

Denso OE Style Air/Fuel Ratio Sensor 234-5093

Denso 234-5093 is an OE Style heated air/fuel ratio sensor built for direct replacement on specific Audi applications. It is engineered for exact fitment and consistent signal response, with a 5-wire design and male connector for the listed upstream locations.

Key Features

• OE Style replacement air/fuel ratio sensor from Denso
• Heated sensor design for faster operating temperature
• Specific fit application with a first-time fit focus
• 5-wire configuration with male connector
• Wiring harness length: 22.24
• Thread diameter: 0.711

Product Details

Denso OE Style sensors are manufactured and tested to OE-level standards, with precision-built components intended to match the original part’s fit and function. Part number 234-5093 is a specific-fit air/fuel ratio sensor for upstream placement on select Audi models, including 2013-2015 Audi RS5 and 2011-2012 Audi A8 Quattro. This part cross-references Bosch 17225 for the same application.

Compatible With 2013-2015 Audi RS5, upstream, and 2011-2012 Audi A8 Quattro, upstream. For Audi RS5 upstream sensor replacement or Audi A8 Quattro upstream air/fuel ratio sensor service, this Denso OE Style unit is built to match the listed vehicle applications.

Common Issues This Sensor May Address

• Check engine light related to air/fuel ratio sensor faults
• Incorrect fuel trim readings
• Rough idle caused by inaccurate exhaust feedback
• Poor drivability from a failing upstream sensor
• Emissions test failure tied to sensor performance

Installation Notes

Verify the connector style, wire count, and thread diameter before installation. This is a specific-fit, heated upstream sensor, so confirm the vehicle application and sensor location match the listing before replacement. Use the existing harness routing and follow factory service procedures for proper installation.

Quality Assurance

Denso manufactures and tests these sensors to OE standards for consistent replacement quality and fit. The OE Style line is focused on direct replacement parts that match the original application requirements for the listed Audi vehicles.