Fitment (Market-Validated Usage)

Based on OEM cross-reference data and verified aftermarket listings, this NOx sensor is used in Renault diesel SCR (AdBlue) systems, mainly on Euro 6 small diesel passenger car platforms and compact SUVs.

Common system applications include:

• Renault Clio V 1.5 Blue dCi (Euro 6 SCR)
• Renault Captur II 1.5 Blue dCi
• Renault Megane IV 1.5 Blue dCi (selected SCR variants)
• Dacia Duster II 1.5 Blue dCi
• Renault Arkana 1.5 Blue dCi (market-dependent)
• Renault–Dacia shared K9K Blue dCi SCR platforms

Fitment is strictly based on OE number matching:
227900016R / SNS0949A / A3C04050600-01

Aftermarket catalog data confirms this is a widely used Continental/VDO-type NOx sensor family applied across Renault Group 1.5 Blue dCi SCR systems.

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 uses AdBlue (urea solution) to reduce NOx emissions and meet Euro 6 standards.

The sensor is an integrated electronic module designed for high-temperature exhaust environments with continuous monitoring and CAN communication.

Symptoms / Fault Codes

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

OE / Part Numbers

• 227900016R
• SNS0949A
• A3C04050600-01
• Renault / Dacia shared SCR NOx sensor family

FAQ

Is this sensor vehicle-specific?

Yes. NOx sensors must match the exact OE number. Even small suffix differences (016R / 063R / 342R variants) can change calibration, connector type, or ECU pairing.

Why do multiple Renault/Dacia models appear?

Because Renault Group uses the same 1.5 Blue dCi SCR architecture across Clio, Captur, Megane, Duster, and related platforms.

Can similar OE numbers be used instead?

Not recommended. These are ECU-calibrated emission components and must match exact OE specification to avoid SCR faults or limp mode.