Volkswagen Golf 5G Exhaust Lambda Oxygen Sensor 2.0 Petrol BlueMotion 1KO973804

Volkswagen Golf 5G Exhaust Lambda Oxygen Sensor 2.0 Petrol BlueMotion is an original exhaust system component from the Lambda sensors and O2 sensors category, designed for petrol engines. Precise measurement of oxygen content in the exhaust gases allows the engine control unit to maintain a stable mixture, which translates into efficient engine operation and proper functioning of the exhaust emission control system.

Specifications and technical data

• SKU: 1KO973804
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 1KO973804
• Substitutable numbers: 1KO973804, 1KO 973 804, 06K906162AC, 06K 906 162 AC
• Fuel type: Petrol
• Category: Oxygen Sensors

Function and application of the lambda sensor

The lambda oxygen sensor in the 2.0 BlueMotion petrol engine is responsible for continuous monitoring of the air-fuel mixture composition. Based on its signal, the controller adjusts the fuel dosage, maintaining conditions close to stoichiometric, which is crucial for the effective operation of the three-way catalytic converter. Using a functional sensor in a petrol engine ensures:

• stable engine performance across the full load range,
• reduced fuel consumption thanks to precise dosing,
• maintenance of exhaust emissions at a level consistent with the vehicle's design specifications,
• reduced risk of catalytic converter damage resulting from an overly rich or lean mixture.

Benefits of using an original Volkswagen component

The lambda sensor dedicated to the Volkswagen Golf 5G is designed for the specific characteristics of the petrol engine, ensuring proper signal dynamics and electrical compatibility with the factory controller. As a result, the control system operates within the range intended by the manufacturer, without the need for adaptation or modification of the installation. The most important advantages of using an original solution include:

• Full compatibility with ECU software – correct readings and no errors related to an incorrect probe signal.
• Stable operating parameters across a wide range of temperatures and engine loads.
• Properly selected materials for the measuring element, adapted to operating conditions in the exhaust stream.

Product characteristics and condition

The offered sensor belongs to the group of exhaust system consumables that wear out over time due to high temperatures and contact with combustion products. The used version allows for an economical replacement of a damaged or unstable component while maintaining the original design specifications. Choosing such a solution is particularly beneficial in situations where:

• diagnostic errors related to mixture regulation appear,
• there are fluctuations in idle speed or increased fuel consumption,
• a probe replacement is necessary as part of broader exhaust system maintenance.

Selection and integration with the vehicle system

To ensure proper cooperation with the electrical installation and the engine controller, the lambda sensor should be selected based on the vehicle manufacturer's markings and the technical parameters of the engine. In the case of the Volkswagen Golf 5G with a BlueMotion petrol engine, the correct selection of the component has a direct impact on the stability of the injection system and the effectiveness of mixture composition regulation. The product has assigned catalog numbers and interchangeable numbers, which facilitates verification of compatibility with a specific vehicle configuration and helps avoid problems with installation or diagnostics after replacement. If you are planning a comprehensive repair or upgrade of the exhaust and mixture control area in your Volkswagen and need other components from the same group, such as additional probes, O2 sensors, or related measuring elements, check the available parts in the Volkswagen Lambda sensors and O2 sensors category.

More about used electronics and sensors

When choosing a used lambda sensor, it is worth knowing the basic principles of selecting and verifying electronic components in a car. Practical tips on assessing the cost-effectiveness of a purchase, how to check compatibility, and the potential benefits of using used components can be found in the article: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?