Denso 234-4069 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4069

Denso 234-4069 is an OE Style heated oxygen sensor built for specific-fit replacement in downstream applications. It is engineered for Toyota Yaris, Scion xA, Scion xB, and Toyota Echo models where accurate exhaust feedback and a proper first-time fit matter.

The OE Style line focuses on direct replacement dimensions and connector design, making this Denso oxygen sensor a practical choice for drivers servicing downstream sensor faults on Toyota Echo and Yaris applications. Part number 234-4069 is built to match the original mounting and electrical layout for the listed vehicles.

Key Features

• Heated oxygen sensor for downstream exhaust monitoring
• Specific fit design for direct replacement on listed applications
• 4-wire configuration with male connector
• Threaded mounting with 0.708 in. thread diameter
• 17.32 in. wiring harness length
• Denso OE Style construction for exact replacement fitment
• Aluminum oxide trap layer helps protect the sensing element from silicone and lead contamination

Product Details

Denso 234-4069 is a heated, threaded oxygen sensor designed for downstream placement on 2000-2014 Toyota and Scion applications listed below. It uses a 4-wire, male-connector layout and a specific-fit design to match the original sensor configuration. Denso’s OE Style product line is focused on replacement parts that follow original equipment dimensions and connection points, which helps simplify service on emissions-related repairs.

This part cross-references Bosch 15273 and NTK 24294 for the same application.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Fault codes tied to downstream exhaust monitoring
• Rough fuel control caused by inaccurate exhaust feedback
• Reduced fuel economy from a worn or contaminated sensor
• Emissions test failures linked to sensor response issues

Fitment

• Fits 2006-2014 Toyota Yaris, downstream, OE Style
• Fits 2004-2006 Scion xA, downstream, OE Style
• Fits 2004-2006 Scion xB, downstream, OE Style
• Fits 2004-2005 Toyota Echo, downstream, Downstream OE #89465-52200; OE Style
• Fits 2003 Toyota Echo, downstream, Downstream OE #89465-52280; OE Style
• Fits 2000-2002 Toyota Echo, downstream, OE Style

Installation Notes and Quality Assurance

Confirm the downstream sensor location, connector style, wire count, and thread size before installation. Compare the original sensor connector and harness length to the replacement part to ensure proper routing and secure mounting. For best results, inspect the exhaust threads and wiring path before installing the new sensor.

Denso manufactures and tests this oxygen sensor to OE standards for consistent replacement quality and fit. The sensor’s aluminum oxide trap layer is designed to help protect the ceramic element from silicone and lead contamination, supporting long-term performance in the listed Toyota and Scion applications.