What is a immobilizer code?

An immobilizer code is a unique security feature used in modern vehicles to prevent unauthorized starting of the engine. It works in conjunction with the car's electronic control unit (ECU) and the key or key fob, ensuring that the engine only starts when the correct code is transmitted. If the immobilizer code does not match, the vehicle will not start, effectively deterring theft. This technology enhances vehicle security by making it difficult for thieves to bypass the ignition system.