A Mercedes-Benz van can log an EGR fault before the driver notices smoke or power loss. This guide explains the Mercedes Sprinter EGR temperature sensor location and how to identify the right part on a V6 diesel without guessing. The sensor is part of the EGR feedback circuit, so its position depends on the engine, model year, and emissions layout.
Where the Sensor Is Usually Found
On many Mercedes-Benz Sprinter vans, the EGR temperature sensor is fitted to the EGR cooler or the pipe that connects the cooler to the EGR valve. On other versions, it may be mounted directly in the EGR valve body. The sensor may be a small probe with a connector, but the exact shape varies by manufacturer and model year.
Use these conditional checkpoints before ordering a replacement:
- EGR cooler: look for a threaded sensor on the cooler housing or its inlet pipe; this is a common position on V6 diesel vans.
- EGR valve body: check the valve assembly for a sensor that reads valve temperature or exhaust gas temperature near the EGR outlet.
- Exhaust pipe: some layouts place the exhaust temperature sensor downstream of the cooler, where it can be reached from the top or under the van.
Mercedes Benz Sprinter 2500 and 2013 Mercedes Benz Notes
The Mercedes Benz Sprinter 2500 may use a V6 diesel, and the EGR cooler position can vary by model year. On a 2013 Mercedes Benz Sprinter, the sensor location can differ from later emissions layouts, so confirm the part number and connector before removal. The same applies to any Mercedes Sprinter that has been serviced with non-genuine components.
A genuine Mercedes sensor is matched to the original connector and mounting, but a correct location check still matters. If the sensor is seized, do not force the body out of the cooler; heat and penetrating oil may help, but follow the manufacturer’s procedure.
Temperature and Pressure Sensor Checks
Do not confuse the EGR temperature sensor with a pressure sensor that may be used for EGR flow. A pressure sensor reads a difference in pressure, while a temperature sensor reads the exhaust temperature or valve temperature. A fault code for one does not prove the other is faulty. Before replacing anything, inspect the connector, wiring, and sensor body for damage; a warning or visual inspection alone does not identify a failed part. The temp value from the EGR sensor helps the engine adjust EGR flow.
Before You Remove the Sensor
- Confirm the engine code and model year before ordering a sensor.
- Compare the old connector and thread size with the new part.
- Check the EGR cooler for cracks or soot before refitting the sensor.
OBDtune Role and Error Suppression
OBDtune supplies a hand-held OBD tool for Mercedes-Benz diesel vehicles. When an EGR-related error remains on the dashboard, the tool can help remove that error and associated limitation after the supported script is selected on the media screen. It does not repair a failed EGR temperature sensor, cooler, or valve, and error suppression does not establish safe driving on public roads. If the sensor is physically faulty, the location guide above still applies before any repair or replacement decision.
