Hello good morning someone can tell me what adjustment means (cvm)

HELLO GOOD MORNING SOMEONE CAN TELL ME WHAT ADJUSTMENT MEANS (CVM) pór genileza

Hello Rafael
CVN-Calibration Verification Number (this is a specific code that controls the ECU firmware version,It can be called a calibration checksum, which is recorded in the ECU microcontroller) If you did reprogramming in the car, then it will change and if you do not re-read it, there will be problems with dealers
Ecu Company Team