Mercedes Sprinter Engine Temperature Sensor – Facet | NCV3 3.0L OM642 | #0051532328 (2010–2018)

A failed engine temperature sensor on a Sprinter OM642 provides the ECU with incorrect thermal data — degrading fueling accuracy, EGR control, and temperature-dependent engine management strategies that depend on knowing where the engine is in its warm-up cycle. This is the Facet engine temperature sensor for NCV3 Sprinters equipped with the 3.0L OM642 diesel engine, a direct replacement that restores accurate temperature feedback.

What This Part Does

The engine temperature sensor — distinct from the main coolant temperature sensor — monitors temperature at a specific point in the engine's thermal circuit, providing additional thermal data the ECU uses for EGR temperature management, fuel trim correction, or secondary temperature monitoring. On the OM642, this sensor feeds into the engine's thermal management strategy alongside the primary coolant temperature sensor. When it fails or drifts, the ECU loses this secondary thermal reference and may log plausibility faults or revert to default temperature assumptions that reduce engine efficiency.

Common Symptoms of a Failing Temperature Sensor

• Check engine light with temperature sensor circuit or plausibility fault codes
• EGR system faults or thermal management warnings on scan tool
• Engine fuel trims that don't correct appropriately during warm-up
• Fault codes that return after clearing without other identified causes

When to Replace

Replace when confirmed faulty by scan tool with active temperature sensor fault codes.

NCV3 OM642 Specific — VIN Verification Required

This sensor is for NCV3 Sprinters equipped with the 3.0L OM642 diesel engine. Always verify your engine code and VIN before ordering. Contact us and we'll confirm fitment before you buy.

Fitment

• 2010–2018 Mercedes-Benz Sprinter 2500 / 3500 – 3.0L OM642 (NCV3/W906)
• 2010–2018 Freightliner Sprinter 2500 / 3500 – 3.0L OM642 (NCV3)

Part Numbers

• Mercedes OEM: 0051532328 / A0051532328 / 005-153-23-28
• Manufacturer: Facet — 7.3350
• SKU: 0051532328