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

Based on OEM Hyundai/Kia EPC listings and verified aftermarket catalog data, part number 29640-2F100 (SNS0811B) is used in Hyundai/Kia Euro 6 diesel SCR (AdBlue) systems, mainly on 2.0 CRDi / 2.2 CRDi diesel SUV platforms (Santa Fe / Palisade / Sorento depending on SCR layout and emission calibration).

Confirmed applications include:

• Hyundai Santa Fe IV (TM / TMA) 2.0 CRDi Euro 6 SCR
• Hyundai Palisade 2.2 CRDi SCR diesel variants (market dependent)
• Kia Sorento III (UM) 2.2 CRDi Euro 6 SCR
• Hyundai/Kia shared SCR diesel SUV architecture

Fitment is strictly based on OE number matching:
29640-2F100 / SNS0811B

Verified Cross-Reference (Important)

• Multiple aftermarket listings confirm 29640-2F100 = SNS0811B NOx sensor used on Hyundai Santa Fe / Palisade / Kia Sorento SCR diesel systems
• SNS0811B is part of the Continental SNS0811 sensor family (SNS0811A / SNS0811B variants) used across Hyundai/Kia SCR platforms
• These sensors are typically used in Euro 6 SCR monitoring systems for 2.0–2.2 CRDi engines (SUV platforms)

📌 Key point:
SNS0811B is a calibration family sensor — meaning small suffix differences (A/B) can affect ECU coding and cannot always be interchanged.

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

The SNS0811B module is commonly used for engine-out or SCR monitoring, depending on whether it is placed upstream or downstream of the SCR catalyst.

Symptoms / Fault Codes

• Check engine light
• SCR / AdBlue system warning
• NOx sensor communication or signal fault
• P2200 / P229F / U029E type codes (platform dependent)
• Reduced engine power (limp mode)
• Increased emissions

OE / Part Numbers

• 29640-2F100
• SNS0811B
• SNS0811A (related variant — not always interchangeable)
• Hyundai/Kia SCR NOx sensor family (2.0 / 2.2 CRDi SUV platform group)

FAQ

Is this sensor interchangeable with other Hyundai/Kia NOx sensors?

Not always. Even within the SNS0811 family, A/B versions may differ in calibration and ECU coding, so direct substitution is not guaranteed.

Why do Santa Fe, Palisade, and Sorento share this sensor?

Because they all use the same Hyundai/Kia 2.0 / 2.2 CRDi Euro 6 SCR diesel architecture, so emission components are shared across SUV platforms.

Can aftermarket versions work?

Yes, but only if the exact SNS0811B calibration matches, otherwise SCR faults, incorrect NOx readings, or limp mode can occur.