Renault Trafic III Temperature Sensor Exhaust Gas Sensor 226404039R

Renault Trafic III Temperature Sensor Exhaust Gas Sensor is a component from the Lambda probes and O2 sensors group, responsible for the precise measurement of gas temperatures in the exhaust system. A properly functioning EGT sensor supports the control of engine operation and the exhaust gas treatment system, which translates into stable engine performance and emission control.

Specifications and technical data

• SKU: 226404039R
• Mark: Renault
• Condition: Used
• OEM Part Number: 226404039R
• Substitutable numbers: 226404039R
• Category: Oxygen Sensors

Function and role of the EGT exhaust gas temperature sensor

The EGT exhaust gas temperature sensor in the Renault Trafic III monitors thermal conditions in the exhaust system and transmits a signal to the engine control unit. Based on this data, the ECU can appropriately adjust the fuel dose, turbocharging strategy, or processes related to exhaust gas treatment. A stable signal from the sensor helps maintain proper engine operating parameters, reduces the risk of overheating exhaust components, and supports compliance with emission standards.

Compatibility and fit for Renault Trafic III

The offered sensor is designed for use in the Renault Trafic III model, which ensures a proper fit in terms of electrical and structural requirements. Using a component from the original Renault solutions group allows for consistency with the factory installation architecture and facilitates diagnostics using standard service tools. As a result, replacing the sensor is predictable, and the risk of engine control unit software compatibility issues remains limited.

Performance and installation characteristics

The EGT exhaust gas temperature sensor operates in a demanding environment of high temperatures and variable loads, which is why its correct selection is important for the durability of the entire exhaust system. A properly selected component:

• supports stable operation of the emission control system,
• facilitates the diagnosis of faults related to exhaust system overheating,
• reduces the risk of incorrect readings leading to power loss or emergency mode.

During installation, it is recommended to use appropriate tightening torques and check the condition of the electrical harness to ensure a reliable signal connection and long-term, repeatable sensor operation.

Product condition and service application

The presented exhaust gas temperature sensor is an aftermarket component, which allows for an economical repair of the exhaust system while maintaining the functionality required for daily operation. This type of component is particularly useful in situations where errors related to exhaust temperature, performance drops, or improper operation of the exhaust gas treatment system occur. Replacing a worn sensor with a functional unit helps restore correct engine operating parameters and limit further thermal stress on exhaust components.

Expansion of the measurement system and electronics selection

When planning broader work on engine electronics, including control modules and other sensors, it is worth paying attention to selecting components according to manufacturer markings and hardware-software compatibility. Practical tips on choosing used modules and sensors, verifying compatibility, and installation can be found in the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

If you are planning a comprehensive repair or upgrade of the exhaust system area in your Renault and need other elements from the same group, such as additional temperature sensors, measuring probes, or control elements, check the available parts in the Renault Lambda probes and O2 sensors category.