Audi A4 A5 2.0 TDI Diesel ECU Engine Control Module - Genuine OEM 03L906022NN

Replace a faulty or damaged diesel engine control module with this Genuine OEM Audi and Bosch ECU, part number 03L906022NN.

This Bosch EDC17CP20 engine control unit is designed for selected Audi A4 and A5 vehicles equipped with a compatible 2.0 TDI diesel engine. The ECU manages essential engine functions including fuel injection, turbocharger operation, emissions systems, sensor information and communication with other vehicle control modules.

Product Features

• Genuine OEM Audi and Bosch engine-management component
• Audi part number 03L906022NN
• Alternative part number format 03L 906 022 NN
• Bosch part number 0281016140
• Alternative Bosch number format 0 281 016 140
• Bosch EDC17CP20 diesel engine control unit
• Suitable for selected Audi A4 and A5 2.0 TDI models
• Associated with selected CAGA engine applications
• Original factory housing and electrical connections

Common Symptoms of a Faulty ECU

• Engine does not start or starts intermittently
• Engine warning light remains illuminated
• Loss of power or reduced-performance mode
• Fuel-injection or turbocharger-control faults
• Communication faults with the engine control module
• Multiple engine-management fault codes
• Water, corrosion or internal electronic damage

Vehicle Compatibility

This ECU may be suitable for selected Audi A4 B8 and Audi A5 8T or 8TA vehicles equipped with a compatible 2.0 TDI diesel engine.

Compatibility depends on the vehicle model, production date, engine code, transmission, emissions equipment, hardware number, software version and complete original part number. Please compare every number on the replacement ECU with the original module before purchasing.

Similar-looking ECUs may contain different software and should not be considered interchangeable solely because the electrical connectors and outer housing appear identical.

Coding and Programming Requirements

Coding, programming or professional ECU cloning is normally required when installing this engine control module into another vehicle.

A standard used ECU may require immobiliser adaptation, VIN matching, security-data programming, software configuration and diagnostic fault-code clearing before the engine will start and operate correctly.

If the original ECU data is professionally cloned onto the replacement unit, separate immobiliser adaptation may not be required. A used ECU should not be considered plug-and-play unless cloning, immobiliser removal or virgin resetting is specifically included with the product.

Installation Information

Professional installation by an Audi technician or qualified automotive electronics specialist is strongly recommended.

The vehicle should be diagnostically tested before the ECU is replaced to confirm that the module is responsible for the fault. Wiring, power supplies, earth connections, sensors and communication networks should also be inspected.

After installation, the ECU should be correctly programmed and the vehicle should be scanned and tested to verify communication with the immobiliser, transmission and emissions systems.