Audi A8 4H 3.0 TDI Diesel Line Lambda Probe Oxygen Sensor 059906262Q

Audi A8 4H 3.0 TDI Diesel Line Lambda Probe Oxygen Sensor is a component from the Lambda probes and O2 sensors category, designed for diesel systems in Audi models with a 3.0 TDI engine. It is responsible for precise exhaust gas composition measurement, which supports stable engine operation, correct fuel dosing, and emission control.

Specifications and technical data

• SKU: 059906262Q
• Mark: Audi
• Condition: Used
• OEM Part Number: 059906262Q
• Substitutable numbers: 059906262Q, 059 906 262 Q, 95860617241, 958 606 172 41, 0281004553, 0 281 004 553
• Fuel type: Diesel
• Category: Oxygen Sensors

Purpose and function in the exhaust system

Audi A8 4H 3.0 TDI Diesel Line Lambda Probe Oxygen Sensor operates in the diesel engine exhaust stream, providing the engine control unit with information about oxygen content. This allows for maintaining optimal combustion parameters, which translates into stable power, reduced smoke, and improved engine performance.

In diesel engines, the O2 sensor is a vital part of the emission control system – its proper operation supports the efficiency of the diesel particulate filter (DPF), catalytic converter, and the entire exhaust treatment system. A functional probe helps reduce the risk of the engine entering limp mode and the appearance of errors related to the fuel mixture and emissions.

Benefits of using an original Audi lambda probe

Using an original oxygen sensor dedicated to Audi ensures:

• Proper cooperation with the engine control unit software – the probe's operating characteristics are matched to the injection maps and control strategies of the 3.0 TDI unit.
• Stable operating parameters across the full load range, from city driving to highway cruising.
• Better fuel consumption control thanks to precise exhaust gas composition measurement.
• Support for maintaining compliance with emission standards intended for the specific model.

A component from this group is particularly important when symptoms such as increased fuel consumption, loss of dynamics, unstable idle, or error messages related to the exhaust and emission system occur.

Technical characteristics and compatibility

The presented lambda probe belongs to the Lambda probes and O2 sensors category and is intended for use in a Diesel fuel type engine. Proper selection based on manufacturer markings and the OEM part number allows for full compatibility with the electrical installation and the mounting thread in the Audi A8 4H 3.0 TDI exhaust system.

Selecting the correct sensor by OEM number or vehicle VIN minimizes the risk of installation issues, communication errors with the controller, and incorrect readings. In case of doubt, it is worth verifying compatibility with service documentation or the Audi parts catalog.

Product condition and practical application

The offered lambda probe is a used component, which allows for an economical replacement of a damaged sensor while maintaining the original manufacturer's specifications. This type of solution is often chosen for advanced exhaust system repairs in premium vehicles, where combining quality with reasonable service costs is essential.

Replacing the lambda probe is recommended in situations where computer diagnostics indicate errors related to the oxygen sensor, as well as during long-term emission or engine performance issues that cannot be resolved by other methods. A correctly selected and functional sensor helps restore proper engine operating parameters and limit further wear of exhaust system components.

More items from this group and knowledge about used electronics

If you are planning a comprehensive repair or upgrade of the exhaust and emission control area in your Audi and need other items from the same group, such as additional probes, O2 sensors, or related exhaust sensors, check the available parts in the Audi Lambda probes and O2 sensors category.

To better understand how to safely select and operate used sensors and other engine electronics, it is worth checking the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

Additional arguments for making an informed choice of second-hand parts, including exhaust system measurement components, are provided in the article Used car parts: Myths and facts you need to know, which clarifies the most common concerns regarding used components.