Fitment (Market-Validated Usage)

Based on OEM cross-reference catalogs, aftermarket supplier databases, and multi-brand equivalence listings, this NOx sensor is used in Renault-Nissan-Mercedes light commercial diesel SCR (AdBlue) systems.

Common system applications include:

• Renault Master III 2.3 dCi (diesel SCR system)
• Renault Trafic III 1.6 / 2.3 dCi
• Nissan NP300 Navara 2.3 dCi (D23 platform)
• Nissan NV300 / NV400 diesel SCR systems
• Opel / Vauxhall Movano B 2.3 CDTI
• Fiat Talento 2.0 / 2.3 diesel (platform shared variants)
• Mercedes-Benz X-Class (some diesel SCR variants)

Fitment is strictly based on OE number matching:
5WK97377 / 22790-3557R / 22790-00Q0A

OE cross-reference data confirms this is a shared Continental/VDO NOx sensor family used across Renault-Nissan-Mercedes LCV diesel SCR platforms.

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 uses AdBlue (urea solution) to reduce NOx emissions and maintain Euro 6 compliance.

The sensor is designed for high-temperature exhaust environments and continuous monitoring in light commercial diesel vehicles.

Symptoms / Fault Codes

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

OE / Part Numbers

• 5WK97377 (Continental/VDO)
• 22790-3557R
• 22790-00Q0A
• SNS377 (common aftermarket reference family)

FAQ

Is this sensor vehicle-specific?

Yes. NOx sensors must match the exact OE number. Even small suffix differences (3557R / 00Q0A variants) can indicate different calibration or connector configuration.

Why do multiple brands appear in fitment?

Because Renault-Nissan-Mercedes shares the same LCV diesel SCR architecture, leading to cross-platform NOx sensor compatibility.

Can similar OE numbers be used instead?

Not recommended. NOx sensors are ECU-calibrated components and must match exact OE specification.