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

Based on OEM Hyundai/Kia parts catalog references and verified aftermarket EPC listings, part number 29650-2U400 is used in Hyundai/Kia diesel SCR (AdBlue) systems, mainly on 1.6 CRDi Euro 6 passenger car platforms (Kia Ceed / Hyundai i30 generation).

Common system applications include:

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

Fitment is strictly based on OE number matching:
29650-2U400

Market listings confirm this is a Hyundai/Kia NOx sensor used on 1.6 CRDi SCR systems, typically as part of the Continental SNS08xx sensor family (same platform group as 2U100 / 2U200 variants).

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 comply with Euro 6 standards.

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

Symptoms / Fault Codes

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

OE / Part Numbers

• 29650-2U400
• Hyundai/Kia SCR NOx sensor family (1.6 CRDi platform group)
• Related sibling parts: 29650-2U100 / 2U200 / 2U250 (same architecture family)

FAQ

Is this sensor vehicle-specific?

Yes. Hyundai/Kia NOx sensors are ECU-calibrated. Even small differences (2U100 / 2U200 / 2U400) can change connector shape, calibration, or exhaust position.

Why do Ceed and i30 share the same sensor?

Because both use the same Hyundai/Kia 1.6 CRDi 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.