Audi A3 8P VW Golf Mk6 1.4 TSI CAXC Petrol Engine Lambda Sensor 03C906262T

Audi A3 8P / VW Golf Mk6 1.4 TSI CAXC Lambda Sensor is a component from the Lambda Sensors and O2 Sensors category, designed for 1.4 TSI gasoline engines. A used, original part from disassembly allows for maintaining proper combustion parameters, stable engine operation, and correct interaction with the engine control system. This is a practical solution for users looking for a proven component at a reasonable price.

Specifications and technical data

• SKU: 03C906262T
• Mark: Audi
• Condition: Used
• OEM Part Number: 03C906262T
• Substitutable numbers: 03C906262T, 03C 906 262 T
• Fuel type: Petrol
• Category: Oxygen Sensors

Purpose and Technical Function

The presented lambda sensor is designed to work with the 1.4 TSI gasoline engine, designated CAXC, used in, among others, the Audi A3 8P and VW Golf Mk6. The sensor measures oxygen content in the exhaust gases, transmitting data to the engine control unit, which adjusts the fuel dose based on this information. This allows for maintaining the correct mixture composition, which affects the engine's running smoothness, fuel consumption, and exhaust emission levels.

A properly selected lambda sensor is crucial for the correct operation of the injection system in a gasoline engine. Using the right O2 sensor helps reduce the risk of control unit errors, rough idling, or power drops under load.

Benefits of Using an Original Lambda Sensor

Using an original O2 sensor from disassembly ensures the maintenance of factory parameters for the exhaust system and engine control. Compared to random aftermarket replacements, such a component offers predictable behavior, accurate measurement characteristics, and compatibility with the control unit software.

• Stable engine operation across the entire RPM range.
• Better control of the fuel-air mixture composition.
• Reduced risk of errors related to the lambda sensor system.
• Ability to maintain factory exhaust emission parameters.

For TSI gasoline engines, it is particularly important for the oxygen sensor to react quickly and repeatably, which translates to smooth transitions between different operating modes of the engine.

Selection, Installation, and Compatibility

To correctly select a lambda sensor for a specific Audi A3 8P or VW Golf Mk6 with a 1.4 TSI CAXC engine, it is advisable to use manufacturer markings and catalog data. This helps avoid problems with cable length, connector type, or sensor operating characteristics. Installing the component requires caution when unscrewing the old sensor and correctly connecting the wiring harness to avoid damaging the thread in the manifold or exhaust system.

Before installation, it is recommended to verify the condition of the socket, check the wiring harness, and clear any potential errors in the control unit after replacement. This will allow the new (used) component to operate optimally immediately, and the control unit to adjust fuel correction maps more quickly.

Why Consider Used Electronics and Sensors?

In the case of lambda sensors and other engine sensors, choosing a proven used part is often a favorable compromise between cost and quality. Original components from disassembly retain factory parameters while being significantly cheaper than new parts from authorized service centers. More practical tips on selecting and installing used modules and sensors can be found in the guide Used Car Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?.

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other parts from the same group, such as additional oxygen sensors, pre-catalytic converter sensors, or post-catalytic converter sensors, check the available parts in the Audi Lambda Sensors and O2 Sensors category.