Audi A3 8V 1.5 TFSI Camshaft Position Sensor 04E906423C

Audi A3 8V 1.5 TFSI Camshaft Position Sensor is a precision component from the Engine sensors and switches category, responsible for accurately determining the camshaft position within the power unit. A properly functioning sensor ensures stable engine operation, correct fuel metering, and optimal ignition control, which translates into efficient vehicle performance.

Specifications and technical data

• SKU: 04E906423C
• Mark: Audi
• Condition: Used
• OEM Part Number: 04E906423C
• Substitutable numbers: 04E906423C, 04E 906 423 C
• Category: Engine Sensors & Switches

The role of the camshaft position sensor in the 1.5 TFSI engine

The camshaft position sensor in the Audi A3 8V 1.5 TFSI works with the engine's electronic control unit, providing it with a signal regarding the current camshaft position. Based on this data, the controller precisely determines the fuel injection and ignition timing, which is crucial for:

• stable idle speed,
• smooth acceleration without jerking,
• reduced fuel consumption,
• maintaining correct exhaust emission parameters.

A functional sensor also helps avoid issues with difficult starting, engine stalling, or entering limp mode.

Benefits of using an original Audi component

The offered sensor belongs to the group of original Audi components, which means maintaining factory operating parameters and full compatibility with the vehicle's electrical system. In practice, this translates into:

• a secure fit into the mounting socket in the cylinder head,
• the correct signal characteristics for the engine control unit,
• no need for wiring modifications or additional adapters,
• preservation of the factory logic of the timing control system.

Thanks to this, the replacement is predictable, and the risk of compatibility issues typical of cheap replacements is minimized.

Condition, origin, and service application

The presented camshaft position sensor comes from dismantling and is a used part, which provides an attractive cost-effective solution while maintaining OEM specifications. This type of part is particularly recommended in situations where:

• engine control unit errors related to camshaft synchronization appear,
• sporadic jerking or misfires occur,
• diagnostics indicate an incorrect signal from the camshaft position sensor.

Replacing it with an original element from the same design group allows for restoring the correct operation of the power unit without the need for costly interference in the timing mechanics.

Practical installation and operational tips

When installing the camshaft position sensor, it is worth paying attention to the cleanliness of the socket in the cylinder head and the condition of the electrical connector. It is recommended to:

• thoroughly clean the contact surface,
• inspect the wiring harness for abrasions and contact corrosion,
• properly route the cable to avoid tension and overheating.

After replacement, it is good practice to perform computer diagnostics, clear stored errors, and verify the current operating parameters of the sensor, which will confirm proper cooperation with the engine control system.

Related engine system components and additional materials

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as temperature sensors, pressure sensors, or switches related to the power unit's operation, check the available parts in the Audi engine sensors and switches category.

During service work within the power unit, it is also worth taking care of the efficiency of the cooling system, which has a direct impact on the durability of sensors and engine electronics – you can find more practical tips in the article Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.