Fitment (Market-Verified Usage — NO guessing added)

Based on OEM cross-reference catalogs and multiple aftermarket listings (Continental SNS957 platform), this NOx sensor is used in Renault–Nissan–Opel–Fiat shared diesel SCR (AdBlue) systems, mainly on 2.0 dCi / M9R Euro 6 commercial and light van platforms.

Common system applications include:

• Renault Trafic III 2.0 dCi (Euro 6 SCR)
• Renault Master III 2.0 / 2.3 dCi (selected SCR variants)
• Nissan NV300 2.0 dCi
• Opel / Vauxhall Vivaro B 2.0 CDTI
• Fiat Talento 2.0 EcoJet
• Renault–Nissan–PSA shared M9R SCR architecture (platform-dependent variants)

Fitment is strictly based on OE number matching:
227909507R / SNS957 / A2C19306600-03

OEM cross-reference data confirms this is a Continental/Vitesco SNS957 NOx sensor used on the M9R 2.0 dCi SCR aftertreatment system.

Technical Description

This NOx sensor measures nitrogen oxide concentration in diesel exhaust gases and transmits 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 maintain Euro 6 compliance.

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

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

• 227909507R
• SNS957
• A2C19306600-03
• Continental / Vitesco SNS957 family

FAQ

Is this sensor vehicle-specific?

Yes. NOx sensors must match the exact OE number. Even small suffix differences (507R / 120R / 120R variants) can change calibration, wiring length, or mounting position.

Why do multiple brands appear (Renault / Nissan / Opel / Fiat)?

Because these manufacturers share the same 2.0 dCi / M9R SCR architecture, so the same NOx sensor is used across multiple vehicles.

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.