Mercedes Sprinter Front NOX Sensor – Genuine OEM | VS30 2.0L OM654 Diesel | #0009050819 (2023–2025)

A failed front NOx sensor on a VS30 Sprinter removes the upstream nitrogen oxide reference the ECU needs to calculate SCR conversion efficiency and dose AdBlue correctly — resulting in fault codes, emissions system errors, and limp mode that won't clear until the sensor is replaced. This is the Genuine Mercedes-Benz OEM front lower NOx sensor for VS30 Sprinters equipped with the 2.0L OM654 diesel engine, a direct replacement that restores accurate upstream NOx measurement and proper aftertreatment system control.

What This Part Does

The front NOx sensor — also called the upstream or pre-SCR NOx sensor — is positioned in the front lower exhaust stream, ahead of the SCR catalyst. It measures the raw nitrogen oxide concentration exiting the engine and DPF before AdBlue injection and SCR processing. The ECU uses this upstream reading as the baseline to calculate how much AdBlue to inject and to verify that the SCR catalyst is achieving the required NOx reduction efficiency. Without accurate upstream data, the ECU cannot determine the correct dosing rate, cannot verify catalyst performance, and cannot distinguish between a dosing fault, a catalyst fault, or a sensor fault — causing the system to log emissions faults and restrict engine output. The front sensor works as a pair with the rear NOx sensor (0009050919), which measures post-SCR output, to give the ECU a complete picture of system performance.

Common Symptoms of a Failing Front NOx Sensor

• Check engine light with fault codes related to upstream NOx sensor circuit or signal range
• Engine entering limp mode or emissions system power restriction
• AdBlue dosing that is erratic, excessive, or insufficient with no AdBlue system fault identified
• NOx-related fault codes that return after clearing and resetting the aftertreatment system
• Emissions system warning messages in the instrument cluster

When to Replace

Replace when the sensor is confirmed faulty by XENTRY or a compatible scan tool with active upstream NOx sensor fault codes. Always use OEM — aftermarket NOx sensors are known to produce signal drift that causes persistent faults even after installation. When replacing the front sensor, inspect the rear sensor (0009050919) at the same time, as both sensors operate as a system and a degraded rear sensor will continue to generate efficiency faults even with a new front sensor in place.

VS30 OM654 Specific — VIN Verification Required

This is the front lower (upstream/pre-SCR) NOx sensor for VS30 Sprinters equipped with the 2.0L OM654 diesel engine. It is not the rear sensor, and it is not compatible with VS30 models equipped with the 3.0L OM642 or NCV3 Sprinters. Always verify sensor position, engine code, and VIN before ordering. Contact us and we'll confirm fitment before you buy.

Fitment

• 2023–2025 Mercedes-Benz Sprinter 1500 – 2.0L OM654 Diesel (VS30)
• 2023–2025 Mercedes-Benz Sprinter 2500 – 2.0L OM654 Diesel (VS30)
• 2023–2025 Mercedes-Benz Sprinter 3500 – 2.0L OM654 Diesel (VS30)
• 2023–2025 Mercedes-Benz Sprinter 3500XD – 2.0L OM654 Diesel (VS30)

✔ Front lower (upstream/pre-SCR) position only — rear sensor requires part #0009050919

Part Numbers

• Mercedes OEM: 0009050819 / A0009050819 / 000-905-08-19
• Manufacturer: Genuine Mercedes-Benz
• SKU: 0009050819OE