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

Based on OEM Hyundai/Kia EPC listings and verified aftermarket catalog data, part number 29640-2F160 (SNS0846A) is used in Hyundai/Kia Euro 6 diesel SCR (AdBlue) systems, mainly on 2.0 CRDi / 2.2 CRDi diesel SUV platforms (Santa Fe / Sorento generation depending on SCR layout and emission calibration).

Confirmed applications include:

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

Fitment is strictly based on OE number matching:
29640-2F160 / SNS0846A

Verified Cross-Reference (Important)

• Multiple aftermarket EPC listings confirm 29640-2F160 = SNS0846A NOx sensor used on Hyundai Santa Fe / Kia Sorento diesel SCR systems (Euro 6)
• Same listing data shows it belongs to the Hyundai/Kia SCR NOx sensor family used across 2.0–2.2 CRDi platforms
• Related variants like SNS0846B / A3C05927900-01 confirm this is a calibration-revision sensor within the same SCR architecture group

📌 Key point:
This is a revision-based SCR NOx sensor (SNS0846A family) — not interchangeable with other Hyundai/Kia 2F / 2U series sensors.

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 SNS0846A module is typically used in 2.0 / 2.2 CRDi SCR systems, positioned either upstream or downstream of the SCR catalyst depending on exhaust layout.

Symptoms / Fault Codes

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

OE / Part Numbers

• 29640-2F160
• SNS0846A
• A3C05927900-01 / SNS0846B revision family
• 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?

No. Even within the same SCR system, Hyundai/Kia uses revision-specific SNS codes (A/B versions). SNS0846A is not interchangeable with 2U or 2F series sensors.

Why do Santa Fe and Sorento share this sensor?

Because both use the same Hyundai/Kia 2.0 / 2.2 CRDi Euro 6 SCR diesel architecture, so emission components are shared.

Can SNS0846B replace SNS0846A?

Not safely. Even if physically similar, ECU calibration differences can trigger SCR faults or incorrect NOx readings.