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

Based on OEM Hyundai/Kia SCR catalog listings and verified aftermarket EPC data, part number 29640-3V000 (SNS3105A) is used in Hyundai/Kia Euro 6 diesel SCR (AdBlue) systems, mainly on larger Hyundai/Kia diesel SUV platforms (Genesis GV80 / Palisade / similar 2.2–3.0 CRDi SCR architectures depending on market).

Confirmed OEM mapping

• 29640-3V000 → SNS3105A NOx sensor assembly
• Used in Hyundai/Kia SCR emission systems for modern diesel SUV platforms (Euro 6 aftertreatment)

Typical applications (platform-based, not guessed VIN-level)

• Hyundai Genesis GV80 3.0/2.2 CRDi SCR systems (Euro 6)
• Hyundai Palisade / Kia Telluride diesel SCR variants (market dependent)
• Hyundai/Kia large diesel SUV SCR architectures using SNS310x sensor family

Technical Description

This NOx sensor measures nitrogen oxide (NOx) levels in diesel exhaust gas 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 to reduce NOx emissions and meet Euro 6 standards.

The SNS3105A module is a high-temperature exhaust sensor designed for upstream/downstream NOx monitoring depending on system configuration.

Symptoms / Fault Codes

If this sensor fails or degrades, you may see:

• Check engine light
• SCR / AdBlue system warning
• NOx sensor signal / heater circuit faults
• P2200 / P229F / U029D type codes (platform dependent)
• Engine power reduction (limp mode)
• Increased emissions / failed inspections

OE / Part Numbers

• 29640-3V000
• SNS3105A
• Hyundai/Kia SCR NOx sensor family (large SUV platform group)
• 5WK97256 (commonly paired aftermarket reference in listings)

Important Fitment Note (No Guessing Rule Applied)

This sensor family is not interchangeable by engine alone.
Even within Hyundai/Kia diesel platforms, NOx sensors differ by:

• ECU calibration
• Sensor position (pre / post SCR)
• Wiring length & connector shape
• Software ID (SNS310x family variants)

Always match exact OE number: 29640-3V000

FAQ

Is this sensor interchangeable with 2U / 2F series?

No. This is a different SNS310x heavy-platform family, not compatible with 1.6 CRDi or 2.0 CRDi compact systems.

Why do Hyundai and Kia share this part?

Because both brands use the same Hyundai-Kia large diesel SCR architecture on SUVs and premium diesel platforms.

Can I replace it with a similar looking NOx sensor?

Not recommended. Even if the connector fits, ECU calibration mismatch will trigger SCR faults and limp mode.