Audi Q2 GA Lambda Sensor Oxygen Sensor Lambda Probe 05L907807M

Audi Q2 GA Lambda Sensor Oxygen Sensor Lambda Probe is an original component from the Lambda sensors and O2 sensors group, designed for diesel engine exhaust systems. Precise measurement of exhaust gas composition in Diesel units allows for stable engine control unit operation, correct fuel metering, and maintenance of exhaust gas treatment system efficiency.

Specifications and technical data

• SKU: 05L907807M
• Mark: Audi
• Condition: Used
• OEM Part Number: 05L907807M
• Substitutable numbers: 05L907807M, 05L 907 807 M
• Fuel type: Diesel
• Category: Oxygen Sensors

Purpose and function in the exhaust system

The lambda sensor in the Audi Q2 GA is responsible for ongoing monitoring of the air-fuel mixture composition in the diesel engine. Based on the sensor signal, the engine control unit adjusts the fuel dose, which affects:

• stable operation of the power unit across the full load range,
• maintenance of proper exhaust emission parameters,
• protection of exhaust system components, including the particulate filter and catalytic converter,
• reduction of excessive fuel consumption while maintaining proper dynamics.

For diesel engines, a properly functioning lambda sensor is crucial for the control system to precisely react to changes in operating conditions and maintain stable combustion parameter values.

Benefits of using an original Audi sensor

Using an original lambda sensor dedicated to the Audi Q2 GA ensures proper fitment with the vehicle's electrical installation and exhaust system. As a result:

• the sensor signal is correctly interpreted by the engine control unit,
• the system's response time to changes in exhaust gas composition remains in line with the manufacturer's specifications,
• the risk of diagnostic errors and warning lights illuminating is minimized,
• compatibility with factory ECU software is maintained.

This solution is particularly beneficial when diagnosing problems with exhaust emissions, rough engine operation, or increased fuel consumption – replacing it with the correct component from the same group allows for the restoration of the power unit's factory operating parameters.

Technical characteristics in the context of a Diesel engine

The lambda sensor designed for Diesel systems operates under specific conditions – with a higher mass of flowing exhaust gases and a different mixture composition than in gasoline engines. The sensor design is adapted for:

• stable operation across a wide range of exhaust system temperatures,
• resistance to contaminants typical of diesel engines,
• cooperation with exhaust gas treatment systems used in modern Diesel units.

Thanks to this, the sensor can provide reliable data to the controller, which translates into better control of the combustion process and maintenance of compliance with emission standard requirements.

Condition, verification, and service application

The item is offered as used, which allows for an economical repair of the exhaust system while maintaining the manufacturer's original specifications. This type of part is particularly suitable in situations where:

• errors related to the operation of the lambda sensor or O2 sensors appear,
• it is necessary to replace a damaged sensor after interference with the exhaust system,
• a service solution with a favorable price-to-quality ratio is sought.

Before installation, standard exhaust system diagnostics and inspection of the electrical installation are recommended to rule out other causes of improper engine operation.

System expansion – other Audi lambda sensors and O2 sensors

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 sensors before the catalytic converter, sensors after the particulate filter, or other O2 sensors in various sections of the system, check the available parts in the Audi Lambda sensors and O2 sensors category.

More about used electronics and sensors

If you want to better understand when choosing used electronic components and sensors makes sense from a technical and economic perspective, it is worth reading the guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?