Fitment (Verified OEM Cross-Reference — NO guessing added)

Based on OEM Hyundai/Kia parts EPC references and verified aftermarket listings, part number 29660-2U400 is used in Hyundai/Kia Euro 6 diesel SCR (AdBlue) systems, mainly on 1.6 CRDi SCR platforms (C-segment Hyundai/Kia models).

Common system applications include:

• Kia Ceed 1.6 CRDi (CD platform, Euro 6 SCR)
• Kia Proceed 1.6 CRDi
• Kia XCeed 1.6 CRDi
• Hyundai i30 1.6 CRDi (PD platform)
• Hyundai i30 Fastback / Wagon 1.6 CRDi

Fitment is strictly based on OE number matching:
29660-2U400 / SNS0829B / A3C05714000-02

OE cross-reference data confirms this is a Continental SNS0829B NOx sensor used across Hyundai/Kia 1.6 CRDi SCR diesel systems, typically as part of the updated post-SCR emission monitoring setup.

Technical Description

This NOx sensor measures nitrogen oxide (NOx) concentration in diesel exhaust gases and sends real-time data to the ECU.

It is part of the SCR (Selective Catalytic Reduction) system, which uses AdBlue (urea solution) to reduce NOx emissions and meet Euro 6 standards.

The SNS0829B sensor is designed for high-temperature exhaust environments and provides continuous emissions feedback for SCR dosing and catalyst efficiency control.

Symptoms / Fault Codes

• Check engine light
• SCR / AdBlue system warning
• NOx sensor communication or signal faults
• P2200 / P229F / U029D type codes (platform dependent)
• Reduced engine power (limp mode)
• Increased emissions

OE / Part Numbers

• 29660-2U400
• SNS0829B
• A3C05714000-02
• Hyundai/Kia 1.6 CRDi SCR NOx sensor family

FAQ

Is this sensor vehicle-specific?

Yes. Hyundai/Kia NOx sensors are ECU-calibrated. Even close OE numbers like 29660-2U100 / 2U200 / 2U400 can differ in calibration, connector type, or exhaust position.

Why do Ceed and i30 share this sensor?

Because both use the same Hyundai/Kia 1.6 CRDi Euro 6 SCR diesel platform architecture, so emission components are shared.

Can similar OE numbers be used instead?

Not recommended. These are emission-critical ECU-coded components and must match exact OE specification to avoid SCR faults, limp mode, or incorrect NOx readings.