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

Based on OEM Hyundai/Kia EPC cross-reference data and multiple verified aftermarket catalogs, part number 29640-2F120 is used in Hyundai/Kia diesel SCR (AdBlue) systems, mainly on 2.0 CRDi Euro 6 SUV platforms.

Common system applications include:

• Hyundai Santa Fe IV (TM/TMA) 2.0 CRDi (Euro 6 SCR)
• Hyundai Santa Fe IV 2.2 CRDi (selected SCR variants)
• Kia Sorento III (UM) 2.0 CRDi / 2.2 CRDi
• Kia Sorento III AWD / 4WD Euro 6 SCR versions

Fitment is strictly based on OE number matching:
29640-2F120

OE cross-reference data confirms this NOx sensor belongs to the Continental SNS0811A / SNS811 sensor family used on Hyundai Santa Fe and Kia Sorento Euro 6 SCR diesel systems.

Related OEM mapping shows the closely linked 29640-2F140 / 2F150 sensors share the same SCR platform family across Santa Fe IV and Sorento III applications, confirming system-level consistency.

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 injects AdBlue (urea solution) into the exhaust stream to reduce NOx emissions and meet Euro 6 standards.

The sensor operates in high-temperature exhaust environments and provides continuous emissions feedback for SCR dosing control.

Symptoms / Fault Codes

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

OE / Part Numbers

• 29640-2F120
• SNS0811A / SNS811 family
• A2C17247400-02 (platform-dependent equivalent reference in related catalogs)

FAQ

Is this sensor vehicle-specific?

Yes. Hyundai/Kia NOx sensors are ECU-calibrated. Even small differences like 2F120 / 2F140 / 2F150 can change mounting position, calibration, or connector type.

Why do Santa Fe and Sorento share the same sensor?

Because both use the same Hyundai/Kia 2.0 / 2.2 CRDi SCR diesel platform architecture (Euro 6 emissions system).

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.