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Denso 234-5002 Air / Fuel Ratio Sensor - Upstream
| Brand | Denso 234-5002 |
|---|---|
| Position | Upstream |
| Wiring Harness Length | 14.53 |
| Sensor Type | Heated |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 5 |
| Grade Type | Regular |
| Connector Gender | Male |
| Thread Diameter | 0.711 |
| Product line | OE Style |
| Fits | Cadillac · 7 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Delivers fast, stable air/fuel ratio readings.
Specific fit. Made to match the part exactly for straightforward installation.
Cross-references ACDelco 213-1572, ACDelco 213-3863 and BorgWarner OS2407 for the same application. See all 13.
OE-Style Air/Fuel Ratio Sensor
Denso 234-5002 is an OE Style heated air/fuel ratio sensor built for specific-fit replacement on select Cadillac applications. It is engineered to match factory connector and thread requirements for accurate exhaust feedback and dependable drivability.
Compatible With 2004-2006 Cadillac CTS, SRX, and STS upstream sensor locations, this Denso air/fuel ratio sensor is a direct-fit option for vehicles that need precise air-fuel monitoring. The Denso 234-5002 part number is also a useful reference when cross-shopping OE-style replacements.
Key Features
- OE Style replacement from Denso
- Heated sensor design for faster operating temperature
- Specific fit for direct application matching
- 5-wire configuration
- Male connector with 14.53-inch wiring harness length
- Thread diameter: 0.711
Detailed Description
Denso manufactures this air/fuel ratio sensor to OE standards with precision-built dimensions for exact replacement and first-time fit. The sensor is designed for upstream placement and uses a specific-fit configuration, helping maintain proper signal response in the exhaust stream. For buyers searching for a Denso 234-5002 air/fuel ratio sensor for Cadillac CTS, SRX, or STS, this part provides a direct replacement path without guesswork.
This part cross-references Bosch 15143 and NTK 24320 for the same application.
Common Issues It May Address
- Check engine light related to air/fuel ratio sensor performance
- Rough idle caused by inaccurate exhaust feedback
- Reduced fuel control from a failing upstream sensor
- Slow sensor response during warm-up
- Incorrect mixture readings affecting drivability
Installation Notes and Tips
Verify upstream sensor location, connector style, and thread size before installation. Confirm the vehicle uses the 1st design rectangular upstream connector where noted in fitment. Inspect the harness routing and connector condition during replacement, and clear diagnostic trouble codes after installation if required by the vehicle system.
Quality Assurance
Denso builds this OE Style sensor to strict original-equipment standards and tests components for replacement accuracy and fit consistency. The design focus is on correct part matching for the listed Cadillac applications, including 2004-2006 CTS, 2006 SRX, and 2005-2006 STS upstream positions.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2006 | Cadillac | SRX | Upstream | OE Style |
| 2006 | Cadillac | STS | Upstream | OE Style |
| 2005 | Cadillac | CTS | Upstream | 1st DesignRectangular Upstream Connector; OE Style |
| 2005 | Cadillac | SRX | Upstream | 1st DesignRectangular Upstream Connector; OE Style |
| 2005 | Cadillac | STS | Upstream | 1st DesignRectangular Upstream Connector; OE Style |
| 2004 | Cadillac | CTS | Upstream | 1st DesignRectangular Upstream Connector; OE Style |
| 2004 | Cadillac | SRX | Upstream | 1st DesignRectangular Upstream Connector; OE Style |
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