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Denso 234-5110 Air / Fuel Ratio Sensor - Upstream
| Brand | Denso 234-5110 |
|---|---|
| Position | Upstream |
| Connector Gender | Male |
| Grade Type | Regular |
| Sensor Type | Heated |
| Thread Diameter | 0.711 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 5 |
| Wiring Harness Length | 11.46 |
| Product line | OE Style |
| Fits | Audi and Cadillac · 16 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Delivers fast, consistent air-fuel ratio monitoring.
Specific fit. Made for a direct, no-modification installation.
Cross-references ACDelco 213-3933, Bosch 17300 and Bosch 17330 for the same application. See all 10.
Denso OE Style Air/Fuel Ratio Sensor
Denso 234-5110 is an OE Style heated air/fuel ratio sensor built for precise replacement and first-time fit. It is made for specific applications and uses a 5-wire, male connector design with an 11.46-inch wiring harness length.
Compatible with select Audi S5 and Audi S6 upstream applications, as well as Cadillac CTS, STS, and SRX upstream positions, this sensor supports accurate air-fuel monitoring for drivability and emissions control. The Denso OE Style line focuses on direct-fit replacement parts that match factory-style requirements.
Key Features
- Heated air/fuel ratio sensor for upstream placement
- Specific-fit design for direct replacement
- 5-wire configuration with male connector
- 11.46-inch wiring harness length
- Thread diameter: 0.711
- OE Style construction for factory-style fit and function
Fitment Details
- Fits 2008-2012 Audi S5, Upstream, OE Style
- Fits 2007 Audi S6, Upstream, Cylinder 1,2,3; OE Style
- Fits 2006-2007 Cadillac CTS, Upstream, OE Style
- Fits 2006-2007 Cadillac STS, Upstream, OE Style
- Fits 2006 Cadillac SRX, Upstream, OE Style
- Fits 2004-2005 Cadillac CTS, Upstream, 2nd Design; Oval Upstream Connector; OE Style
- Fits 2004-2005 Cadillac SRX, Upstream, 2nd Design; Oval Upstream Connector; OE Style
- Fits 2005 Cadillac STS, Upstream, 2nd Design; Oval Upstream Connector; OE Style
What This Sensor Helps Address
- Incorrect air-fuel ratio readings from a worn upstream sensor
- Check engine light concerns related to sensor performance
- Rough idle or hesitation tied to mixture control issues
- Fuel trim problems caused by inaccurate exhaust feedback
- Emissions test failures linked to sensor degradation
Installation Notes and Tips
Verify upstream location, connector style, and engine/application details before installation. This part cross-references Bosch 17300 and NTK 24327 for the same application. For Audi S5, Audi S6, Cadillac CTS, Cadillac STS, and Cadillac SRX fitment, confirm the original connector and sensor layout match the vehicle listing before replacement.
Quality Assurance
Denso manufactures and tests this sensor to OE standards for consistent replacement performance. The OE Style line is built for exact replacement fitment and factory-style operation on the listed applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2012 | Audi | S5 | Upstream | OE Style |
| 2011 | Audi | S5 | Upstream | OE Style |
| 2010 | Audi | S5 | Upstream | OE Style |
| 2009 | Audi | S5 | Upstream | OE Style |
| 2008 | Audi | S5 | Upstream | OE Style |
| 2007 | Audi | S6 | Upstream | Cylinder 1,2,3; OE Style |
| 2007 | Cadillac | CTS | Upstream | OE Style |
| 2007 | Cadillac | STS | Upstream | OE Style |
| 2006 | Cadillac | CTS | Upstream | OE Style |
| 2006 | Cadillac | SRX | Upstream | OE Style |
| 2006 | Cadillac | STS | Upstream | OE Style |
| 2005 | Cadillac | CTS | Upstream | 2nd Design; Oval Upstream Connector; OE Style |
| 2005 | Cadillac | SRX | Upstream | 2nd Design; Oval Upstream Connector; OE Style |
| 2005 | Cadillac | STS | Upstream | 2nd Design; Oval Upstream Connector; OE Style |
| 2004 | Cadillac | CTS | Upstream | 2nd Design; Oval Upstream Connector; OE Style |
| 2004 | Cadillac | SRX | Upstream | 2nd Design; Oval Upstream Connector; OE Style |
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