Denso 234-9126 Air / Fuel Ratio Sensor - Upstream

Denso OE Style Air/Fuel Ratio Sensor

Denso 234-9126 is an OE Style heated air/fuel ratio sensor built for direct replacement on the 2006 Honda Civic upstream position. It is engineered for specific fitment, with a 4-wire design and an 11.38-inch wiring harness length for a precise service replacement.

Key Features

• Heated air/fuel ratio sensor for upstream exhaust placement
• Specific fitment for 2006 Honda Civic applications
• 4-wire configuration for OE-style electrical connection
• 11.38-inch wiring harness length
• Regular grade replacement part
• OE Style line focused on exact replacement and first-time fit

Product Details

The Denso OE Style line is built around direct replacement requirements, with components precision-built to match original equipment dimensions and connection points. Part number 234-9126 is intended for the 2006 Honda Civic upstream sensor location, where accurate air/fuel feedback is critical to engine management and emissions control. If you are searching for a 2006 Honda Civic upstream air/fuel ratio sensor or a Denso 234-9126 replacement, this OE-style sensor provides the correct fitment profile for that application.

This part cross-references Bosch 13982 for the same application.

Common Issues This Sensor May Address

• Check engine light related to air/fuel ratio sensor performance
• Incorrect upstream sensor readings affecting fuel control
• Emissions test failure tied to sensor response issues
• Rough idle or drivability concerns caused by faulty feedback data
• Replacement needs after sensor aging, contamination, or electrical failure

Installation Notes and Tips

Confirm the upstream position before installation and verify connector style, wire count, and harness length against the original sensor. For best results, inspect the exhaust bung, wiring routing, and nearby connectors for heat damage or corrosion before installing the new sensor. This Denso 234-9126 is a specific-fit replacement for the 2006 Honda Civic, so matching the exact application is important.

Quality Assurance

Denso manufactures and tests these sensors to OE standards, with attention to exact replacement fit and consistent electrical performance. The OE Style product line is focused on direct-fit service parts that match original equipment requirements for the listed Honda Civic application.