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

Based on OEM Hyundai/Kia EPC cross-reference data and Continental SNS08xx sensor family listings, part number 29660-2U300 is used in Hyundai/Kia Euro 6 diesel SCR (AdBlue) systems, mainly on 1.6 CRDi C-segment vehicles (Hyundai i30 / Kia Ceed platform generation).

Common system applications include:

• Kia Ceed 1.6 CRDi (CD) Euro 6 SCR
• 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:
29660-2U300

📌 Important note:
This OE number sits within the same Hyundai/Kia SCR NOx sensor family as 29660-2U100 / 2U200 / 2U400, but calibration and connector variants may differ depending on exhaust position and ECU mapping, so exact OE matching is required.

Technical Description

This NOx sensor measures nitrogen oxide (NOx) levels 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 regulations.

The sensor is mounted in the exhaust system and continuously monitors emissions performance before or after the SCR catalyst depending on system layout.

Symptoms / Fault Codes

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

OE / Part Numbers

• 29660-2U300
• Hyundai/Kia SCR NOx sensor family (1.6 CRDi platform group)
• Related SNS family: SNS0817 / SNS0819 / SNS0820 series (platform dependent variants)

FAQ

Is this sensor vehicle-specific?

Yes. Hyundai/Kia NOx sensors are ECU-calibrated. Even close OE variants (2U100 / 2U200 / 2U300 / 2U400) may differ in calibration, connector, or exhaust position.

Why do Ceed and i30 share the same sensor?

Because both use the same Hyundai/Kia 1.6 CRDi Euro 6 SCR diesel 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.