Engine Control Unit 55557540 / 5WK9441 – Opel Vectra C Signum 1.8 16V VIRGIN
The 55557540 engine control unit, also identified by part number 5WK9441, is an original electronic module used in Opel vehicles with the petrol 1.8 16V engine. It is responsible for engine management, fuel injection control, and cooperation with the immobilizer system.
ECU 5WK9441 was installed in Opel Vectra C and Opel Signum models equipped with the 1.8 16V engine, produced between 2002–2008. The 55557540 control unit was used in sedan, hatchback, and estate versions.
The offered 55557540 engine control unit is supplied in VIRGIN (clean) condition, meaning it contains no stored vehicle data or immobilizer information. The module has a clean CAR PASS and after installation requires programming and adaptation to the vehicle.
Programming of engine control unit 5WK9441 must be carried out using TECH-2 or OP-COM diagnostics. After correct adaptation, the ECU stores vehicle data and operates like a factory-new module.
Q&A – questions about 55557540 / 5WK9441
Does engine control unit 55557540 fit Opel Vectra C 1.8 16V?
Yes, engine control unit 55557540 is designed for Opel Vectra C with the 1.8 16V engine and requires programming after installation.
Which models are compatible with control unit 5WK9441?
Engine control unit 5WK9441 is used in Opel Vectra C and Opel Signum with the petrol 1.8 16V engine.
Is ECU 55557540 supplied in VIRGIN version?
Yes, ECU 55557540 is supplied in VIRGIN version – a clean module with no immobilizer data and a clean CAR PASS.
Will control unit 5WK9441 start the vehicle without programming?
No, engine control unit 5WK9441 requires programming and adaptation to the specific vehicle.
Which device is required to program control unit 55557540?
Programming of engine control unit 55557540 requires TECH-2 or OP-COM.
Can 5WK9441 replace a faulty control unit?
Yes, control unit 5WK9441 can be used as a replacement, provided correct programming or data cloning is performed.