0261S08055 / 03C906026AB – ECU ENGINE CONTROLLER VW Audi Seat IMMO OFF Plug & Play version
The offered ECU ENGINE CONTROLLER 0261S08055 / 03C906026AB is an original control module used in vehicles of the Volkswagen Group – including models from VW, Audi and Seat.
The module for sale has been fully tested on a diagnostic test bench and prepared in the IMMO OFF version. This means the controller is ready for Plug & Play installation – it does not require immobiliser programming or key adaptation. After connecting it to the vehicle wiring system, the unit can operate without additional coding.
Every engine controller undergoes a thorough technical inspection before shipping. Diagnostic communication, correct operation of control systems and stability during engine simulation tests are verified. Thanks to this process, the customer receives a product that is fully functional and ready for installation.
Controller compatibility – part numbers
The controller should be selected only based on the part number. The most important identifiers of this module are:
If the number on your controller is identical, it confirms full electrical and software compatibility.
Application of controller 03C906026AB / 0261S08055
The module 03C906026AB is used in selected vehicles of the Volkswagen Audi Group equipped with petrol TSI engines.
Most common applications:
- Volkswagen Golf V / Golf VI – 1.4 TSI engines
- Volkswagen Jetta – 1.4 TSI
- Volkswagen Passat B6 – 1.4 TSI
- Audi A3 8P – 1.4 TFSI
- Seat Leon – 1.4 TSI
- Seat Altea – 1.4 TSI
- Seat Toledo – 1.4 TSI
- Skoda Octavia II – 1.4 TSI
Approximate vehicle production years: around 2006 – 2012.
Example engine codes working with this controller may include 1.4 TSI / TFSI engines depending on the vehicle version and market.
Most common symptoms of engine controller failure
- engine cannot be started
- problems with ECU diagnostic communication
- immobiliser errors
- irregular engine operation
- sensor errors despite functional sensors
- engine stalling while driving
In such cases, replacing the module with a working ECU ENGINE CONTROLLER 03C906026AB or 0261S08055 is usually the most effective solution.
FAQ – frequently asked questions
Does ECU ENGINE CONTROLLER 0261S08055 fit VW Golf 1.4 TSI?
If the number of your controller is 0261S08055 or 03C906026AB, the module will be compatible with the vehicle. Always compare the part numbers before purchase.
Does ECU 03C906026AB in Audi A3 1.4 TFSI require programming?
No. The offered controller is prepared in the IMMO OFF version, which means it works in Plug & Play mode and does not require immobiliser programming.
Does controller 0261S08055 work in Seat Leon 1.4 TSI?
Yes, provided that the part number matches. The key identification is 0261S08055 or 03C906026AB on the original module.
Can ECU 03C906026AB be installed without coding in Skoda Octavia 1.4 TSI?
Yes, because the offered controller is prepared in the IMMO OFF Plug & Play version. After connection, the module is ready to operate.
Does ECU ENGINE CONTROLLER 0261S08055 fit VW Passat 1.4 TSI?
If the part number in your vehicle is 0261S08055 or 03C906026AB, the controller will be compatible.
Can ECU 03C906026AB solve an immobiliser problem in Audi or Volkswagen?
Yes. The IMMO OFF version eliminates the immobiliser problem and allows the vehicle to start without key adaptation.
