Audi A4 B9 A6 C7 A7 4G Exhaust Gas Temperature Sensor 3.0 TDI Diesel 059906088CN

The Audi A4 B9 A6 C7 A7 4G 3.0 TDI Exhaust Gas Temperature Sensor 059906088CP is a specialized component from the Lambda Sensors and O2 Sensors group, designed for Audi diesel systems with the 3.0 TDI engine. Precise exhaust gas temperature measurement supports the correct operation of the exhaust system and exhaust gas purification systems, which translates into stable engine performance and proper engine control unit diagnostics.

Specifications and technical data

• SKU: 059906088CN
• Mark: Audi
• Condition: Used
• OEM Part Number: 059906088CN
• Substitutable numbers: 059906088CN, 059 906 088 CN
• Fuel type: Diesel
• Category: Oxygen Sensors

Purpose and Function in the 3.0 TDI Engine

The presented exhaust gas temperature sensor is dedicated to Audi A4 B9, A6 C7, and A7 4G models with the 3.0 TDI engine, where it is responsible for monitoring the current temperature of gases in the exhaust system. A correctly functioning element of this type:

• enables the engine control unit to precisely manage the combustion process,
• supports the control of exhaust gas purification systems,
• facilitates the diagnosis of potential exhaust system irregularities.

Thanks to this, the diesel engine maintains stable operating parameters, and responses to load and temperature are predictable and repeatable.

Technical Characteristics and Integration with the Exhaust System

The exhaust gas temperature sensor from this series has been designed to work with control systems typical for modern Audi diesel engines. The component is integrated into the system in such a way as to ensure:

• appropriate measurement positioning within the exhaust gas flow,
• stable temperature readings across a wide range of loads,
• signal consistency with other sensors in the measurement group.

In practice, this translates into better control over the combustion process and more predictable operation of systems responsible for exhaust emissions in diesel engines.

Benefits of Using an Original Audi Sensor

Using an exhaust gas temperature sensor designed for specific Audi models allows for the preservation of the factory logic of the engine control unit. The most important advantages include:

• High Compatibility with ECU Software – the control unit receives a signal with parameters consistent with the manufacturer's specifications.
• Stable Diesel Engine Performance – reduces the risk of exhaust system component overheating and incorrect fuel injection adjustments.
• Better cooperation with other measurement group components within the exhaust system.

A measurement system configured in this way promotes the maintenance of appropriate 3.0 TDI engine performance in daily use.

Condition, Verification, and Selection by OEM

The offered exhaust gas temperature sensor is a used component, which in practice means the possibility of an economical repair while maintaining a component with parameters close to factory specifications. Before installation, it is recommended to verify compatibility with the OEM number and the specific vehicle configuration to ensure proper cooperation with the existing wiring harness and control unit.

If you want to deepen your knowledge on selecting and installing used measurement and control components, it is worth reading the Global Parts guide: used automotive electronics – second-hand ECU modules and sensors, which discusses OEM number selection, compatibility issues, and practical installation tips.

Related Components from the Audi Lambda Sensors and O2 Sensors Group

If you are planning a comprehensive repair or upgrade of the exhaust system area in your Audi and need other components from the same group, such as additional temperature sensors, lambda sensors, or other O2 sensors, check the available parts in the Audi Lambda Sensors and O2 Sensors category.

Preparing Your Car for Demanding Conditions

In diesel engines, maintaining the efficiency of measurement components during periods of increased thermal load, e.g., in winter or during intensive use, is particularly important. A functional exhaust gas temperature sensor helps reduce the risk of exhaust system malfunction and unplanned vehicle downtime. Additional tips on inspecting used components before the cold season can be found in the guide: winter essentials for used car parts.